CN106834857B - A kind of W-WC-TiC-Hf-Co alloy bar material and preparation method thereof - Google Patents
A kind of W-WC-TiC-Hf-Co alloy bar material and preparation method thereof Download PDFInfo
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- CN106834857B CN106834857B CN201710027695.6A CN201710027695A CN106834857B CN 106834857 B CN106834857 B CN 106834857B CN 201710027695 A CN201710027695 A CN 201710027695A CN 106834857 B CN106834857 B CN 106834857B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/22—Remelting metals with heating by wave energy or particle radiation
- C22B9/228—Remelting metals with heating by wave energy or particle radiation by particle radiation, e.g. electron beams
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
Abstract
The invention discloses a kind of W-WC-TiC-Hf-Co alloy bar materials and preparation method thereof, it is related to alloy material preparation technical field.It is by following mass percent at being grouped as：WC 1%-5%, TiC 2%-8%, Hf 1%-5%, Co 1%-5%, surplus are W and inevitable impurity, preparation method：(1) tungsten powder, tungsten carbide powder, carbonized titanium powder, hafnium powder and cobalt powder are uniformly mixed using the method for wet ball grinding, mixed-powder is obtained after vacuum drying；(2) vacuum-sintering obtains sintered body；(3) electron-beam smelting 2-5 times obtains ingot casting；(4) hot extrusion obtains semi-finished product bar stock；(5) hot extrusion obtains alloy bar material.W-WC-TiC-Hf-Co alloy bar material of the present invention has high rigidity, high intensity and excellent comprehensive mechanical property, has wide practical use in fields such as aerospace field, national defense industry, electronic information, the energy.
Description
Technical field
The present invention relates to alloy material preparation technical fields, and in particular to a kind of W-WC-TiC-Hf-Co alloy bar material
And preparation method thereof.
Background technique
Refractory metal tungsten alloy has a series of excellent mechanical properties such as density height, intensity height, in defence and military, aviation
There is very extensive purposes, in national economy in the fields such as space flight, electronic information, the energy, metallurgy and Mechanical Processing Industry
It occupies an important position.High density tungsten alloy generally refers to W-WC-TiC, W-WC-Cu, W-Cu alloy system, and tungstenic amount is
85%-99%, the common feature of these alloys are density height (16.5-19.0g/cm3), thermal expansion coefficient is small, corrosion stability and anti-
Oxidation susceptibility is good, electrical and thermal conductivity performance is good, and the alloy having also have that intensity is high, ductility is good, toughness is good etc. other
Many excellent properties, therefore such tungsten alloy has all obtained widely in stratosphere, national defense industry and civilian industry
Application, such as gyrorotor and counterweight and vibration-absorptive material on aircraft, armor-piercing bullet bullet core and shrapnel, X-ray-preventing shielding
Heavy alloy oscillator, electric upsetting anvil block and electrode material on material, mobile phone etc..
With the development and update that science and technology is with rapid changepl. never-ending changes and improvements, the requirement to material is higher and higher, is adapted therewith,
It is the developing direction of the multi-functional tungsten alloy material of research and development novel high-performance using new technology and new material, in a new generation
In integrated circuit, due to being routed increasingly thinner (at present up to 0.2 μm), heat dissipation and heatproof need all to will be enlarged by tungsten substrate material
Demand, furthermore metallization packaged will also develop to refractory material.Therefore, high density tungsten alloy and composite material are in structure and function
Importance in energy material application field is more prominent, and application potential is increasing.Thus such alloy material receives
The great attention of countries in the world, it has also become materials science one of research field the most active.However, traditional tungsten alloy by
It is limited in by self-defect and preparation process, its comprehensive mechanical property can not be greatly improved.Based on this, a kind of W-WC- is designed
TiC-Hf-Co alloy bar material is particularly necessary.
Summary of the invention
In view of the shortcomings of the prior art, object of the present invention is to be to provide a kind of W-WC-TiC-Hf-Co alloy bar
Material and preparation method thereof, the W-WC-TiC-Hf-Co alloy bar material have high rigidity, high intensity and excellent synthesis mechanical property
Can, have wide practical use in fields such as aerospace field, national defense industry, electronic information, the energy and dynamic power machines.
To achieve the goals above, the present invention is to realize by the following technical solutions：A kind of W-WC-TiC-Hf-Co
Alloy bar material, by following mass percent at being grouped as：WC 1%-5%, TiC 2%-8%, Hf 1%-5%, Co 1%-
5%, surplus is W and inevitable impurity.
Preferably, the W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC
2%-4%, TiC 3%-7%, Hf 2%-4%, Co 2%-4%, surplus are W and inevitable impurity.
Preferably, the W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC
3%, TiC 5%, Hf 3%, Co 3%, surplus are W and inevitable impurity.
A kind of preparation method of W-WC-TiC-Hf-Co alloy bar material, preparation step are：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are uniformly mixed using the method for wet ball grinding, vacuum
Mixed-powder is obtained after drying；
(2) by mixed-powder compression moulding described in step (1), blank is obtained, the blank is then placed in vacuum and is burnt
In freezing of a furnace, it is not more than 5 × 10 in vacuum degree-2Pa, heat preservation 2h-3h is sintered place under conditions of temperature is 1200 DEG C -1500 DEG C
Reason, obtains sintered body after furnace cooling；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 2-5 times under part carries out the processing that strips off the skin after natural cooling, obtains ingot casting；The electric current of the electron-beam smelting is 3A-
5A, the voltage of the electron-beam smelting are 70kV-90kV；
It (4) is 1300 DEG C -1500 DEG C in temperature by ingot casting described in step (3), extrusion ratio is squeezed under conditions of being 4-6
It presses, carries out the processing that strips off the skin after natural cooling, obtain semi-finished product bar stock；
It (5) is 1200 DEG C -1400 DEG C squeezing temperature by semi-finished product bar stock described in step (4), extrusion ratio is the item of 4-6
It is squeezed under part, the processing that strips off the skin is carried out after natural cooling, obtain W-WC-TiC-Hf-Co alloy bar material.
Preferably, the quality purity of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder in the step (1)
It is not less than 99%；The partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is not more than 10 μm, the hafnium
For the partial size of powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm.
Preferably, use dehydrated alcohol for dispersing agent during wet ball grinding in the step (1), it is described anhydrous
The volume of ethyl alcohol is 1-4 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum, and wherein the unit of volume is
ML, the unit g of quality；The rate of wet ball grinding is 300rpm-400rpm, and ratio of grinding media to material is (1-5)：1, Ball-milling Time 3h-7h.
Preferably, it is 1350 DEG C -1450 DEG C that temperature is squeezed in the step (4), extrusion ratio 4.5-5.5.
Preferably, it is 1250 DEG C -1350 DEG C that temperature is squeezed in the step (5), extrusion ratio 4.5-5.5.
Beneficial effects of the present invention：(1) W-WC-TiC-Hf-Co alloy bar is prepared using the technical process of electron-beam smelting
Material has the advantages that with high purity, oxygen content is low etc., is conducive to the temperature-room type plasticity for improving material.
(2) room temperature and elevated temperature strength that TiC improves material are added in W-WC alloy material；Co element is added to improve
The temperature-room type plasticity of material.
(3) since Hf element and O member are known as very high affinity, Hf element is added to W-WC-TiC-Hf-Co alloy
In, the content of O element in the base is on the one hand reduced, reduces O in the segregation of grain boundaries, enhances crystal boundary binding force, change
It has been apt to the plasticity of alloy；On the other hand, Hf element and oxygen form HfO particle, and HfO particle is uniformly distributed in matrix, is conducive to change
The room temperature and elevated temperature strength of kind alloy.
(4) W-WC-TiC-Hf-Co alloy bar material is prepared by secondary extrusion technical process, on the one hand reduces extruding temperature
Degree and extrusion ratio, reduce the requirement to extrusion equipment；On the other hand, it is crushed and has refined tissue, and make tiny W particle
It is evenly distributed in Co Binder Phase with ceramic phase, this ideal microstructure has W-WC-TiC-Hf-Co alloy bar material
Good temperature-room type plasticity is conducive to shaping for material.
(5) W-WC-TiC-Hf-Co is prepared using multicomponent mechanical alloying+electron-beam smelting+secondary extrusion technical process
Alloy bar material, the Rockwell hardness (HRC) of prepared W-WC-TiC-Hf-Co alloy bar material are 65-74, oxygen content 59ppm-
87ppm, room temperature tensile intensity is 1270MPa-1530MPa, elongation percentage 17%-25%, and 1500 DEG C of tensile strength is
Thus 137MPa-215MPa proves that the W-WC-TiC-Hf-Co alloy bar material has high rigidity, high intensity and excellent synthesis
Mechanical property, before the fields such as aerospace field, national defense industry, electronic information, the energy and dynamic power machine are widely used
Scape.
Detailed description of the invention
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments；
Fig. 1 is the micro-organization chart of W-WC-TiC-Hf-Co alloy bar material prepared by the embodiment of the present invention 1.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Referring to Fig.1, present embodiment uses following technical scheme：A kind of W-WC-TiC-Hf-Co alloy bar material, by
Following mass percent at being grouped as：WC 1%-5%, TiC 2%-8%, Hf 1%-5%, Co 1%-5%, surplus W
With inevitable impurity.
A kind of preparation method of W-WC-TiC-Hf-Co alloy bar material, preparation step are：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are uniformly mixed using the method for wet ball grinding, vacuum
Mixed-powder is obtained after drying；
(2) by mixed-powder compression moulding described in step (1), blank is obtained, the blank is then placed in vacuum and is burnt
In freezing of a furnace, it is not more than 5 × 10 in vacuum degree-2Pa, heat preservation 2h-3h is sintered place under conditions of temperature is 1200 DEG C -1500 DEG C
Reason, obtains sintered body after furnace cooling；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 2-5 times under part carries out the processing that strips off the skin after natural cooling, obtains ingot casting；The electric current of the electron-beam smelting is 3A-
5A, the voltage of the electron-beam smelting are 70kV-90kV；
It (4) is 1300 DEG C -1500 DEG C in temperature by ingot casting described in step (3), extrusion ratio is squeezed under conditions of being 4-6
It presses, carries out the processing that strips off the skin after natural cooling, obtain semi-finished product bar stock；
It (5) is 1200 DEG C -1400 DEG C squeezing temperature by semi-finished product bar stock described in step (4), extrusion ratio is the item of 4-6
It is squeezed under part, the processing that strips off the skin is carried out after natural cooling, obtain W-WC-TiC-Hf-Co alloy bar material.
It is worth noting that, the quality of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder in the step (1)
Purity is not less than 99%；The partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is not more than 10 μm, institute
The partial size of hafnium powder and cobalt powder is stated no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm.
It is worth noting that, use dehydrated alcohol for dispersing agent during wet ball grinding in the step (1), it is described
The volume of dehydrated alcohol is 1-4 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum, wherein the list of volume
Position is mL, the unit g of quality；The rate of wet ball grinding is 300rpm-400rpm, and ratio of grinding media to material is (1-5)：1, Ball-milling Time 3h-
7h。
In addition, it is 1350 DEG C -1450 DEG C that temperature is squeezed in the step (4), extrusion ratio 4.5-5.5；In step (5)
Squeezing temperature is 1250 DEG C -1350 DEG C, extrusion ratio 4.5-5.5.
Present embodiment makes tungsten alloy material not only retain itself such as high-melting-point, corrosion-resistant by advanced technology
Equal excellent performances, and to increase substantially comprehensive mechanical property, make its aerospace field, national defense industry, electronic information,
The fields such as the energy and dynamic power machine have wide practical use.
Embodiment 1：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC 3%,
TiC 5%, Hf 3%, Co 3%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 350rpm, ratio of grinding media to material 3 in revolving speed：Wet ball grinding 5h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 2.5 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
Wherein the unit of volume is mL, the unit g of quality, and the tungsten carbide powder, carbonized titanium powder, hafnium powder, the quality of cobalt powder and tungsten powder are pure
Degree is not less than 99%, and the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is described no more than 10 μm
For the partial size of hafnium powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by mixed-powder compression moulding described in step (1), blank is obtained, the blank is then placed in vacuum and is burnt
In freezing of a furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The burning
The temperature of knot processing is 1350 DEG C, soaking time 2.5h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 3 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
4A, melting voltage are 80kV；
It (4) is 1400 DEG C squeezing temperature by institute's ingot casting in step (3), extrusion ratio is squeezed under conditions of being 5, natural
The processing that strips off the skin is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1300 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 5, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
The microscopic structure of W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment is as shown in Figure 1.It can from Fig. 1
Out, the matrix of the microscopic structure of W-WC-TiC-Hf-Co alloy bar material is made of tiny W particle and Binder Phase Co, WC and TiC
Ceramic phase is uniformly distributed in the base.The defects of visible cavity, micro-crack are not observed in microstructure, this is because adopting
The internal flaw of W-WC-TiC-Hf-Co alloy bar material is not only eliminated with secondary hot extrusion technique, while causes material further
Densification, and keep microstructure more uniform；Equally distributed WC and TiC ceramic strengthening phase substantially increases W-WC-TiC-Hf-
The room temperature and elevated temperature strength of Co alloy bar material；The preferable Co of plasticity is made to form continuously distributed group using secondary hot extrusion technique
It knits, this tissue is so that W-WC-TiC-Hf-Co alloy bar material has good temperature-room type plasticity；Hf element is formed with the O in matrix
HfO reduces the content of O in the base.Since O element can deteriorate the comprehensive mechanical property of material, Hf element reduces O
In the segregation of grain boundaries, enhances crystal boundary binding force, improve the plasticity of alloy, while HfO is uniformly distributed in the base, favorably
In the room temperature and mechanical behavior under high temperature that improve W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 74, and oxygen content 59ppm, room temperature tensile intensity is 1530MPa, elongation percentage is
25%, 1500 DEG C of tensile strength is 215MPa.
Embodiment 2：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC 1%,
TiC 2%, Hf 1%, Co 1%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 350rpm, ratio of grinding media to material 3 in revolving speed：Wet ball grinding 5h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 2.5 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
Wherein the unit of volume is mL, the unit g of quality, and the tungsten carbide powder, carbonized titanium powder, hafnium powder, the quality of cobalt powder and tungsten powder are pure
Degree is not less than 99%, and the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is described no more than 10 μm
For the partial size of hafnium powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by mixed-powder compression moulding described in step (1), blank is obtained, the blank is then placed in vacuum and is burnt
In freezing of a furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The burning
The temperature of knot processing is 1350 DEG C, soaking time 2.5h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 3 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
4A, melting voltage are 80kV；
It (4) is 1400 DEG C squeezing temperature by institute's ingot casting in step (3), extrusion ratio is squeezed under conditions of being 5, natural
The processing that strips off the skin is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1300 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 5, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 65, and oxygen content 87ppm, room temperature tensile intensity is 1270MPaMPa, elongation percentage
It is 17%, 1500 DEG C of tensile strength is 137MPa.
Embodiment 3：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC 5%,
TiC 8%, Hf 5%, Co 5%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 350rpm, ratio of grinding media to material 3 in revolving speed：Wet ball grinding 5h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 2.5 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
Wherein the unit of volume is mL, the unit g of quality, and the tungsten carbide powder, carbonized titanium powder, hafnium powder, the quality of cobalt powder and tungsten powder are pure
Degree is not less than 99%, and the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is described no more than 10 μm
For the partial size of hafnium powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by mixed-powder compression moulding described in step (1), blank is obtained, the blank is then placed in vacuum and is burnt
In freezing of a furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The burning
The temperature of knot processing is 1350 DEG C, soaking time 2.5h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 3 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
4A, melting voltage are 80kV；
(4) by step, (institute's ingot casting is 1400 DEG C squeezing temperature in 3, and extrusion ratio is squeezed under conditions of being 5, natural
The processing that strips off the skin is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1300 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 5, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 69, and oxygen content 72ppm, room temperature tensile intensity is 1470MPa, elongation percentage is
19%, 1500 DEG C of tensile strength is 189MPa.
Embodiment 4：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC 2%,
TiC 3%, Hf 2%, Co 2%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 300rpm, ratio of grinding media to material 1 in revolving speed：Wet ball grinding 3h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 1 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
The unit of middle volume be mL, the unit g of quality, the tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality purity
It is not less than 99%, the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is not more than 10 μm, the hafnium
For the partial size of powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by step (1) the mixed-powder compression moulding, blank is obtained, the blank is then placed in vacuum-sintering
In furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The sintering
The temperature of processing is 1200 DEG C, soaking time 2h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 2 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
3A, melting voltage are 70kV；
It (4) is 1300 DEG C squeezing temperature by institute's ingot casting in step (3), extrusion ratio is squeezed under conditions of being 4, natural
The processing that strips off the skin is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1200 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 4, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 71, and oxygen content 62ppm, room temperature tensile intensity is 1490MPa, elongation percentage is
23%, 1500 DEG C of tensile strength is 210MPa.
Embodiment 5：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC 4%,
TiC 7%, Hf 4%, Co 4%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 400rpm, ratio of grinding media to material 5 in revolving speed：Wet ball grinding 3h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 4 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
The unit of middle volume be mL, the unit g of quality, the tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality purity
It is not less than 99%, the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is not more than 10 μm, the hafnium
For the partial size of powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by step (1) the mixed-powder compression moulding, blank is obtained, the blank is then placed in vacuum-sintering
In furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The sintering
The temperature of processing is 1500 DEG C, soaking time 2h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 5 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
5A, melting voltage are 90kV；
It (4) is 1500 DEG C squeezing temperature by institute's ingot casting in step (3), extrusion ratio is squeezed under conditions of being 6, natural
The processing that strips off the skin is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1400 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 6, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 69, and oxygen content 83ppm, room temperature tensile intensity is 1520MPa, elongation percentage is
21%, 1500 DEG C of tensile strength is 201MPa.
Embodiment 6：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC 1%,
TiC 2%, Hf 5%, Co 5%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 400rpm, ratio of grinding media to material 5 in revolving speed：Wet ball grinding 3h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 4 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
The unit of middle volume be mL, the unit g of quality, the tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality purity
It is not less than 99%, the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is not more than 10 μm, the hafnium
For the partial size of powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by step (1) the mixed-powder compression moulding, blank is obtained, the blank is then placed in vacuum-sintering
In furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The sintering
The temperature of processing is 1500 DEG C, soaking time 2h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 5 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
5A, melting voltage are 90kV；
It (4) is 1500 DEG C squeezing temperature by institute's ingot casting in step (3), extrusion ratio is squeezed under conditions of being 6, natural
The processing that strips off the skin is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1400 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 6, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 67, and oxygen content 62ppm, room temperature tensile intensity is 1310MPa, elongation percentage is
19%, 1500 DEG C of tensile strength is 149MPa.
Embodiment 7：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC 5%,
TiC 8%, Hf 1%, Co 1%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 400rpm, ratio of grinding media to material 5 in revolving speed：Wet ball grinding 3h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 4 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
The unit of middle volume be mL, the unit g of quality, the tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality purity
It is not less than 99%, the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is not more than 10 μm, the hafnium
For the partial size of powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by step (1) the mixed-powder compression moulding, blank is obtained, the blank is then placed in vacuum-sintering
In furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The sintering
The temperature of processing is 1500 DEG C, soaking time 2h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 5 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
5A, melting voltage are 90kV；
It (4) is 1500 DEG C squeezing temperature by institute's ingot casting in step (3), extrusion ratio is squeezed under conditions of being 6, natural
The processing that strips off the skin is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1400 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 6, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 74, and oxygen content 83ppm, room temperature tensile intensity is 1500MPa, elongation percentage is
23%, 1500 DEG C of tensile strength is 198MPa.
Embodiment 8：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC 3%,
TiC 5%, Hf 3%, Co 3%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 350rpm, ratio of grinding media to material 3 in revolving speed：Wet ball grinding 5h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 2.5 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
Wherein the unit of volume is mL, the unit g of quality, and the tungsten carbide powder, carbonized titanium powder, hafnium powder, the quality of cobalt powder and tungsten powder are pure
Degree is not less than 99%, and the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is described no more than 10 μm
For the partial size of hafnium powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by step (1) the mixed-powder compression moulding, blank is obtained, the blank is then placed in vacuum-sintering
In furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The sintering
The temperature of processing is 1350 DEG C, soaking time 2.5h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 5 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
5A, melting voltage are 90kV；
It (4) is 1350 DEG C squeezing temperature by institute's ingot casting in step (3), extrusion ratio is squeezed under conditions of being 4.5, from
The processing that strips off the skin so is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1250 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 4.5, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 71, and oxygen content 80ppm, room temperature tensile intensity is 1450MPa, elongation percentage is
20%, 1500 DEG C of tensile strength is 179MPa.
Embodiment 9：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC 3%,
TiC 5%, Hf 3%, Co 3%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 350rpm, ratio of grinding media to material 3 in revolving speed：Wet ball grinding 5h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 2.5 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
Wherein the unit of volume is mL, the unit g of quality, and the tungsten carbide powder, carbonized titanium powder, hafnium powder, the quality of cobalt powder and tungsten powder are pure
Degree is not less than 99%, and the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is described no more than 10 μm
For the partial size of hafnium powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by step (1) the mixed-powder compression moulding, blank is obtained, the blank is then placed in vacuum-sintering
In furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The sintering
The temperature of processing is 1350 DEG C, soaking time 2.5h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 5 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
5A, melting voltage are 90kV；
It (4) is 1450 DEG C squeezing temperature by institute's ingot casting in step (3), extrusion ratio is squeezed under conditions of being 5.5, from
The processing that strips off the skin so is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1350 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 5.5, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 70, and oxygen content 65ppm, room temperature tensile intensity is 1430MPa, elongation percentage is
23%, 1500 DEG C of tensile strength is 175MPa.
Embodiment 10：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC
1%, TiC 2%, Hf 1%, Co 1%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 350rpm, ratio of grinding media to material 3 in revolving speed：Wet ball grinding 5h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 2.5 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
Wherein the unit of volume is mL, the unit g of quality, and the tungsten carbide powder, carbonized titanium powder, hafnium powder, the quality of cobalt powder and tungsten powder are pure
Degree is not less than 99%, and the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is described no more than 10 μm
For the partial size of hafnium powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by step (1) the mixed-powder compression moulding, blank is obtained, the blank is then placed in vacuum-sintering
In furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The sintering
The temperature of processing is 1350 DEG C, soaking time 2.5h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 5 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
5A, melting voltage are 90kV；
It (4) is 1450 DEG C squeezing temperature by institute's ingot casting in step (3), extrusion ratio is squeezed under conditions of being 5.5, from
The processing that strips off the skin so is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1350 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 5.5, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 65, and oxygen content 87ppm, room temperature tensile intensity is 1270MPa, elongation percentage is
25%, 1500 DEG C of tensile strength is 137MPa.
Embodiment 11：A kind of W-WC-TiC-Hf-Co alloy bar material, by following mass percent at being grouped as：WC
5%, TiC 8%, Hf 5%, Co 5%, surplus are W and inevitable impurity.
The preparation method of the present embodiment W-WC-TiC-Hf-Co alloy bar material includes the following steps：
(1) tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder are placed in ball mill, are dispersion with dehydrated alcohol
Agent is 350rpm, ratio of grinding media to material 3 in revolving speed：Wet ball grinding 5h under conditions of 1 is dried after ball milling under vacuum conditions, is mixed
Close powder；The volume of the dehydrated alcohol is 2.5 times of tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality sum,
Wherein the unit of volume is mL, the unit g of quality, and the tungsten carbide powder, carbonized titanium powder, hafnium powder, the quality of cobalt powder and tungsten powder are pure
Degree is not less than 99%, and the partial size of the tungsten carbide powder is not more than 20 μm, and the partial size of the carbonized titanium powder is described no more than 10 μm
For the partial size of hafnium powder and cobalt powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm；
(2) by step (1) the mixed-powder compression moulding, blank is obtained, the blank is then placed in vacuum-sintering
In furnace, it is not more than 5 × 10 in vacuum degree-2It is sintered under conditions of Pa, sintered body is obtained after furnace cooling；The sintering
The temperature of processing is 1350 DEG C, soaking time 2.5h；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2The item of Pa
Electron-beam smelting 5 times under part, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The melting electric current of the electron-beam smelting is
5A, melting voltage are 90kV；
It (4) is 1450 DEG C squeezing temperature by institute's ingot casting in step (3), extrusion ratio is squeezed under conditions of being 5.5, from
The processing that strips off the skin so is carried out after cooling, obtains semi-finished product bar stock；
(5) it is 1350 DEG C squeezing temperature by W-WC-TiC-Hf-Co alloy semi-finished product bar stock described in step (4), squeezes
Pressure ratio is squeezed under conditions of being 5.5, and the processing that strips off the skin is carried out after natural cooling, obtains W-WC-TiC-Hf-Co alloy bar material.
W-WC-TiC-Hf-Co alloy bar material manufactured in the present embodiment has high rigidity, high intensity and excellent resultant force
The features such as learning performance, Rockwell hardness (HRC) are 74, and oxygen content 87ppm, room temperature tensile intensity is 1530MPa, elongation percentage is
25%, 1500 DEG C of tensile strength is 215MPa.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (9)
1. a kind of W-WC-TiC-Hf-Co alloy bar material, which is characterized in that by following mass percent at being grouped as：WC
1%-5%, TiC 2%-8%, Hf 1%-5%, Co 1%-5%, surplus are W and inevitable impurity；Its preparation step
For：
(1) use the method for wet ball grinding by WC 1%-5%, TiC 2%-8%, Hf 1%-5%, Co 1%-5%, surplus
It is uniformly mixed for W and inevitable impurity, it is tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt that mixed-powder is obtained after vacuum drying
Powder and tungsten powder；
(2) by mixed-powder compression moulding described in step (1), blank is obtained, the blank is then placed in vacuum sintering furnace
In, it is not more than 5 × 10 in vacuum degree-2Pa, heat preservation 2h-3h is sintered under conditions of temperature is 1200 DEG C -1500 DEG C, with
Sintered body is obtained after furnace is cooling；
(3) sintered body described in step (2) is placed in electron beam furnace, is not more than 1 × 10 in vacuum degree-2Under conditions of Pa
Electron-beam smelting 2-5 times carries out the processing that strips off the skin after natural cooling, obtains ingot casting；The electric current of the electron-beam smelting is 3A-5A,
The voltage of the electron-beam smelting is 70kV-90kV；
It (4) is 1300 DEG C -1500 DEG C in temperature by ingot casting described in step (3), extrusion ratio is squeezed under conditions of being 4-6,
The processing that strips off the skin is carried out after natural cooling, obtains semi-finished product bar stock；
It (5) is 1200 DEG C -1400 DEG C squeezing temperature by semi-finished product bar stock described in step (4), under conditions of extrusion ratio is 4-6
It is squeezed, the processing that strips off the skin is carried out after natural cooling, obtain W-WC-TiC-Hf-Co alloy bar material.
2. a kind of W-WC-TiC-Hf-Co alloy bar material according to claim 1, which is characterized in that by following quality percentage
Ratio at being grouped as：WC 2%-4%, TiC 3%-7%, Hf 2%-4%, Co 2%-4%, surplus is for W and inevitably
Impurity.
3. a kind of W-WC-TiC-Hf-Co alloy bar material according to claim 2, which is characterized in that by following quality percentage
Ratio at being grouped as：WC 3%, TiC 5%, Hf 3%, Co 3%, surplus are W and inevitable impurity.
4. a kind of preparation method of W-WC-TiC-Hf-Co alloy bar material according to claim 1, which is characterized in that described
The step of (1) in tungsten carbide powder, carbonized titanium powder, hafnium powder, cobalt powder and tungsten powder quality purity be not less than 99%.
5. a kind of preparation method of W-WC-TiC-Hf-Co alloy bar material according to claim 1, which is characterized in that described
The step of (1) in the partial size of tungsten carbide powder be not more than 20 μm, the partial size of the carbonized titanium powder is not more than 10 μm, the hafnium powder and cobalt
For the partial size of powder no more than 50 μm, the partial size of the tungsten powder is not more than 30 μm.
6. a kind of preparation method of W-WC-TiC-Hf-Co alloy bar material according to claim 1, which is characterized in that described
The step of (1) in use dehydrated alcohol for dispersing agent during wet ball grinding, the volume of the dehydrated alcohol be tungsten carbide powder,
Carbonized titanium powder, hafnium powder, 1-4 times of cobalt powder and tungsten powder quality sum, wherein the unit of volume is mL, the unit g of quality.
7. a kind of preparation method of W-WC-TiC-Hf-Co alloy bar material according to claim 1, which is characterized in that described
The step of (1) in wet ball grinding rate be 300rpm-400rpm, ratio of grinding media to material be (1-5)：1, Ball-milling Time 3h-7h.
8. a kind of preparation method of W-WC-TiC-Hf-Co alloy bar material according to claim 1, which is characterized in that described
The step of (4) in squeeze temperature be 1350 DEG C -1450 DEG C, extrusion ratio 4.5-5.5.
9. a kind of preparation method of W-WC-TiC-Hf-Co alloy bar material according to claim 1, which is characterized in that described
The step of (5) in squeeze temperature be 1250 DEG C -1350 DEG C, extrusion ratio 4.5-5.5.
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