CN105671411B - A kind of carbide enhancing iron base composite material and its powder metallurgy in-situ synthetic method - Google Patents
A kind of carbide enhancing iron base composite material and its powder metallurgy in-situ synthetic method Download PDFInfo
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- CN105671411B CN105671411B CN201610066803.6A CN201610066803A CN105671411B CN 105671411 B CN105671411 B CN 105671411B CN 201610066803 A CN201610066803 A CN 201610066803A CN 105671411 B CN105671411 B CN 105671411B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 35
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 31
- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 18
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 17
- 238000010189 synthetic method Methods 0.000 title claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 238000009792 diffusion process Methods 0.000 claims abstract description 5
- 239000000428 dust Substances 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 42
- 238000002156 mixing Methods 0.000 claims description 25
- 238000000498 ball milling Methods 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000010936 titanium Substances 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 238000001994 activation Methods 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 6
- 238000001513 hot isostatic pressing Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000011282 treatment Methods 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- 239000011812 mixed powder Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 239000010955 niobium Substances 0.000 claims description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 150000001722 carbon compounds Chemical class 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 2
- 239000002244 precipitate Substances 0.000 abstract 1
- 238000004137 mechanical activation Methods 0.000 description 10
- 238000005245 sintering Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 6
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0207—Using a mixture of prealloyed powders or a master alloy
-
- B22F1/0003—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1039—Sintering only by reaction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2201/00—Treatment under specific atmosphere
- B22F2201/20—Use of vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of carbide enhancing iron base composite material and its powder metallurgy in-situ synthetic method, the carbide is the compound that carbon and other metallic elements are formed, and is formed in situ in iron-based material as reinforced phase.The initial feed for preparing carbide enhancing iron base composite material is carbon dust, iron powder and other elemental metalpowders, it is characterized in that, other described metallic elements have magnitude differences with diffusion velocity of the carbon in iron matrix, and control is adjusted to the grain diameter and pattern of the reinforced phase during powder metallurgy fabricated in situ.It is capable of the pattern and grain size of Effective Regulation carbide using the present invention, and simple for process easy to control.Pass through the regulation and control of carbide particle pattern and grain size, it can obtain the carbide enhancing iron base composite material of reinforced phase particle fine uniform and Dispersed precipitate, carbide can fully play the dispersion-strengthened action of iron-based body, and the intensity of composite material and hardness is made to be greatly improved.
Description
Technical field
The present invention relates to a kind of carbide enhancing iron base composite material and its powder metallurgy in-situ synthetic methods, belong to powder
Metallurgical situ synthesis techniques field.
Background technology
The high speed development of the modern industry work mould that there is an urgent need to work under the complicated service condition such as high temperature, high speed, wear-resisting
Tool and structural member, such as fast mill roll ring, the roll of directive wheel, hot-work die etc., and existing steel material is difficult to meet
Service condition needs.Particle enhanced steel iron base composite material due to have simultaneously the superior toughness of metal material, cold and hot working,
The high-strength height of solderability and ceramic particle is hard, and the performances such as wear-resisting become the key areas of researcher's research and development.Hard phase
Grain can be oxide, nitride and carbide, wherein titanium carbide, have high intensity, high-modulus, high-melting-point and and iron-based
The features such as body good wettability is the more satisfactory reinforced phase of particle reinforced iron matrix composites.
The preparation of powder metallurgy reaction in-situ is a kind of technology being combined powder metallurgy with reaction in-situ, has both two kinds of skills
The advantage of art.Since reinforced phase particle is that reaction in-situ generates, resulting materials have reinforced phase/basal body interface cleaning, interface
The features such as bond quality is good, structural homogenity is high, this synthetic technology are ideal as particle reinforced iron matrix composites are prepared
Method.Up to the present, the formation to the pattern and grain size of reinforced phase particle in powder metallurgy reaction in-situ and control research
Seldom.In fact, the intrinsic properties of particle phase, shared volume fraction, distribution, grain size and pattern, to Compound Material Engineering
Performance has key effect.The especially grain size and pattern of reinforced phase particle, in addition to (may be such as sintered by external experiment condition
Temperature, sintering time etc.) influence other than, the grain size of reactant and pattern can generate it vital shadow in reaction in-situ
It rings.It is distributed disperse, the reinforced phase particle that grain size is tiny, pattern is close to spherical shape, dispersion-strengthened effect performance is ultimate attainment, and acquisition is answered
The intensity and hardness of condensation material greatly improve.
In the prior art, the carbide particle of fabricated in situ enhances iron base composite material, the grain of reinforced phase carbide particle
Diameter and pattern can not obtain effective control, and the reinforced phase carbide particle of acquisition there may come a time when to generate nucleocapsid knot without regularity
Structure there may come a time when that grain size is very big, such as tens microns to hundreds of microns not, dispersion-strengthened effect does not protrude；Sometimes it can obtain
Slightly tiny reinforced phase titanium carbide granule, such as 30-50 microns, but granule-morphology is irregular, is distributed also uneven, disperse
Strengthening effect can not embody well.In order to obtain better dispersion-strengthened effect, researcher goes for more tiny
(10 microns of average grain diameter or less), pattern reinforced phase carbide particle close to spherical shape, had also tried a variety of methods, but effect is all
It is not satisfactory.
Invention content
The present invention specifically addresses above-mentioned technical problems, provide a kind of powder metallurgy of carbide enhancing iron base composite material
In-situ synthetic method, make the carbide of acquisition enhance iron base composite material reinforced phase carbide particle is more tiny, pattern connects
Subsphaeroidal, dispersion-strengthened action gives full play to.
In order to achieve the above object, the technical solution that the present invention takes is：
A kind of powder metallurgy in-situ synthetic method of carbide enhancing iron base composite material, carbide is reinforced phase, described
Carbide includes carbon and other metallic elements, the initial feed for preparing carbide enhancing iron base composite material be carbon dust, iron powder and
Other elemental metalpowders, which is characterized in that other described metallic elements have with diffusion velocity of the carbon in iron matrix
Control is adjusted to the grain diameter and pattern of the reinforced phase during powder metallurgy fabricated in situ in magnitude differences.
Further, the adjusting control refers to carrying out mechanical activation processing just for other described elemental metalpowders.
Further, mechanical activation processing refers to before batch mixing, to other metals member described in initial feed
Plain powder carries out ball milling activation process, with other elemental metalpowders after being activated.
Further, the ball milling activation process includes parameter：Ratio of grinding media to material is 10: 1, other elemental metalpowder alcohol ratios
It is 2g: 1ml, ball milling speed 250-300r/min, Ball-milling Time 45-50h.
Further, include the following steps：
1) the mechanical activation processing of other elemental metalpowders, other elemental metalpowders after being activated；
2) batch mixing：Using other elemental metalpowders after carbon dust, iron powder and the activation as the original powder of composite material
End is that 2-5% carries out the starting powder preparation by carbide mass percentage, carries out wet mixing batch mixing, ball in the ball mill
Material is than being 3: 1, and starting powder alcohol ratio is 2g: 1ml, rotating speed 200-250r/min, mixing time 4-6h.
3) mixed-powder obtained by step 2) is dried in vacuum drying chamber, drying temperature is 80-100 DEG C.
4) dried powder obtained by step 3) is subjected to molding or cold isostatic compaction.
5) will vacuum be carried out by the sample that step 4) presses or hot isostatic pressing (HIP) is sintered reaction in-situ, and obtain carbide
Enhance iron base composite material composite material.
Further, other described metallic elements include one kind or more in titanium, chromium, vanadium, niobium, tungsten, zirconium or rare earth element
Kind.
Further, the reinforced phase carbide particle average grain diameter is less than 5 μm after adjusting control, and granule-morphology is approximation
It is uniform to be distributed disperse in iron-based body for spherical shape.
It is prepared by the powder metallurgy in-situ synthetic method that the present invention enhances iron base composite material according to a kind of above-mentioned carbide
Carbide enhance iron base composite material, it is characterised in that：Ingredient and each composition quality percentage composition are C：0.80~
1.20%, other described metallic elements：3.50~4.50%, surplus Fe.
The fundamental basis of the present invention allows for the greatest differences of carbon and other metallic elements diffusion velocity in iron matrix
(for example, carbon differs two orders of magnitude with the diffusion coefficient of titanium at identical temperature), reinforced phase particle can be to raw material other metals members
The grain size and pattern of plain powder show certain tissue heredity, may be implemented to titanium carbide granule using this heredity
The regulation and control of grain size and pattern.By carrying out mechanical activation processing, i.e. ball-milling treatment to other elemental metalpowders in raw material, make
Other elemental metalpowders refinement in raw material, and thermal stability is lower, and better reactivity is provided for subsequent reaction in-situ
Can, autonomous growth is tiny at grain size in reaction process in situ, reinforced phase particle of almost spherical, and stress concentration is effectively relieved,
The driving force for reducing crack extesion makes carbide particle more to ensure toughness to the maximum extent while increasing intensity
It dissipates reinforcing effect to give full play to, the intensity and hardness of carbide enhancing iron base composite material all effectively improve.
Beneficial effects of the present invention are：A kind of powder metallurgy of carbide enhancing iron base composite material provided by the invention is former
Position synthetic method, process are simply easy to control, and flow is short, are not necessarily at the conventional chemical that chemical surface plating etc. is complicated, pollution is high
The reinforced phase particle of science and engineering sequence, acquisition is tiny, and pattern is uniform, is in almost spherical, and dispersion-strengthened effect plays fully, is ensuring foot
Under the premise of enough toughness, the mechanical properties such as intensity and the hardness of carbide enhancing iron base composite material are substantially increased.
Description of the drawings
Fig. 1, Fig. 2 are respectively ((a) is before regulating and controlling, and is (b) after regulating and controlling) composite material microscopic appearance before and after example 1,2 regulates and controls
Comparison.
Specific implementation mode
Example 1
Raw material Ti powder, C powder and Fe powder are taken, is followed the steps below：
1) Ti powder mechanical activation is handled：Ball milling activation process is carried out to raw material titanium valve by following parameter：Ratio of grinding media to material is 10: 1,
Titanium valve alcohol ratio is 2g: 1ml, ball milling speed 250r/min, Ball-milling Time 45h.
2) batch mixing：The Ti powder of raw material C powder, Fe powder and process mechanical activation processing is mixed into the original prepared as composite material
Beginning powder is 3% progress powder preparation by titanium carbide mass percentage, wet mixing batch mixing, ball material is carried out in planetary ball mill
Than being 3: 1, raw material alcohol ratio is 2g: 1ml, rotating speed 200r/min, mixing time 4h.
3) batch mixing of step 2) is dried in vacuum drying chamber, drying temperature is 80 DEG C.
4) the dried powder of step 3) is subjected to die forming, pressing pressure 100MPa.
5) sample for pressing step 4) carries out vacuum-sintering reaction in-situ, and heating rate is 10 DEG C/min, sintering temperature
It it is 1400~1500 DEG C, soaking time 2h, furnace cooling obtains the Fe (TiC) of vacuum-sintering reaction in-situpComposite material.
1 example 1 of table regulates and controls front and back composite property comparison
Example 2
Raw material Ti powder, C powder and Fe powder are taken, is followed the steps below：
1) Ti powder mechanical activation is handled：Ball milling activation process is carried out to raw material titanium valve by following parameter：Ratio of grinding media to material is 10: 1,
Titanium valve alcohol ratio is 2g: 1ml, ball milling speed 300r/min, Ball-milling Time 50h.
2) batch mixing：The Ti powder of raw material C powder, Fe powder and process mechanical activation processing is mixed into the original prepared as composite material
Beginning powder is 5% progress powder preparation by titanium carbide mass percentage, wet mixing batch mixing, ball material is carried out in planetary ball mill
Than being 3: 1, raw material alcohol ratio is 2g: 1ml, rotating speed 250r/min, mixing time 6h.
3) batch mixing of step 2) is dried in vacuum drying chamber, drying temperature is 100 DEG C.
4) the dried powder of step 3) is subjected to cold isostatic compaction, pressing pressure 200MPa.
5) sample for pressing step 4) carries out hot isostatic pressing (HIP) and is sintered reaction in-situ, and heating rate is 10 DEG C/min,
Sintering temperature is 1200~1300 DEG C, soaking time 4h, and furnace cooling obtains the Fe of hot isostatic pressing (HIP) sintering reaction in-situ
(TiC) composite material.
2 example 2 of table regulates and controls front and back composite property comparison
Example 3
Raw material W powder, C powder and Fe powder are taken, is followed the steps below：
1) W powder mechanical activation is handled：Ball milling activation process is carried out to raw material W powder by following parameter：Ratio of grinding media to material is 10: 1, W
Powder alcohol ratio is 2g: 1ml, ball milling speed 300r/min, Ball-milling Time 50h.
2) batch mixing：The W powder of raw material C powder, Fe powder and process mechanical activation processing is mixed into the original prepared as composite material
Beginning powder is 4% progress powder preparation by tungsten carbide mass percentage, wet mixing batch mixing, ball material is carried out in planetary ball mill
Than being 3: 1, raw material alcohol ratio is 2g: 1ml, rotating speed 250r/min, mixing time 6h.
3) batch mixing of step 2) is dried in vacuum drying chamber, drying temperature is 100 DEG C.
4) the dried powder of step 3) is subjected to cold isostatic compaction, pressing pressure 200MPa.
5) sample for pressing step 4) carries out hot isostatic pressing (HIP) and is sintered reaction in-situ, and heating rate is 10 DEG C/min,
Sintering temperature is 1200~1300 DEG C, soaking time 5h, and furnace cooling obtains the carbon of hot isostatic pressing (HIP) sintering reaction in-situ
Changing tungsten enhances iron base composite material.
Claims (3)
1. a kind of powder metallurgy in-situ synthetic method of carbide enhancing iron base composite material, carbide is reinforced phase, the carbon
Compound includes carbon and other metallic elements, and other metallic elements refer in titanium, chromium, vanadium, niobium, tungsten, zirconium or rare earth element
It is one or more, prepare carbide enhancing iron base composite material initial feed be carbon dust, iron powder and other elemental metalpowders,
It is characterized in that, other metallic elements have magnitude differences, reinforced phase with diffusion velocity of the carbon in iron matrix
Particle can show certain tissue heredity to the grain size of other elemental metalpowders and pattern described in raw material, and utilization is this
Control is adjusted to the grain diameter and pattern of the reinforced phase during powder metallurgy fabricated in situ in heredity；In batch mixing
Before, ball-milling treatments are carried out to the other elemental metalpowders in initial feed, it is tiny and activated to obtain grain size
Other elemental metalpowders；The ball-milling treatment includes parameter：Ratio of grinding media to material is 10: 1, and other elemental metalpowder alcohol ratios are
2g: 1ml, ball milling speed 250-300r/min, Ball-milling Time 45-50h；After such adjusting control, using described
Carbide prepared by powder metallurgy in-situ synthetic method enhances iron base composite material, can realize reinforced phase carbide particle grain size
Less than 5 μm, granule-morphology is almost spherical.
2. a kind of powder metallurgy in-situ synthetic method of carbide enhancing iron base composite material according to claim 1,
It is characterized in that：
Include the following steps：
1) ball-milling treatment of other elemental metalpowders, acquisition grain size are tiny and by the other elemental metalpowders activated；
2) batch mixing：Using other elemental metalpowders after carbon dust, iron powder and the activation as the starting powder of composite material, press
Carbide mass percentage is that 2-5% carries out the starting powder preparation, carries out wet mixing batch mixing in the ball mill, ratio of grinding media to material is
3: 1, starting powder alcohol ratio is 2g: 1ml, rotating speed 200-250r/min, mixing time 4-6h.
3) mixed-powder obtained by step 2) is dried in vacuum drying chamber, drying temperature is 80-100 DEG C.
4) dried powder obtained by step 3) is subjected to molding or cold isostatic compaction.
5) will vacuum be carried out by the sample that step 4) presses or hot isostatic pressing (HIP) is sintered reaction in-situ, and obtain carbide enhancing
Iron base composite material.
3. a kind of carbide enhancing iron-based prepared by powder metallurgy in-situ synthetic method according to claim 1 or 2 is compound
Material, it is characterised in that：Ingredient and each composition quality percentage composition are C：0.80~1.20%, other metallic elements：
3.50~4.50%, surplus Fe.
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| CN108971500B (en) * | 2018-07-20 | 2021-06-11 | 淮阴工学院 | High-corrosion-resistance in-situ nano carbide reinforced stainless steel implant and forming method thereof |
| CN111101047A (en) * | 2018-10-25 | 2020-05-05 | 青海民族大学 | In-situ TiC particle and large-proportion amorphous alloy co-reinforced manganese steel-based composite material and preparation method thereof |
| CN110129650B (en) * | 2019-05-15 | 2021-09-07 | 西安理工大学 | Metal/carbide core-shell reinforced steel-iron-based composite material and preparation method thereof |
| CN110541902B (en) * | 2019-09-06 | 2021-07-30 | 北京浦然轨道交通科技股份有限公司 | Copper-iron-based powder metallurgy brake pad friction block and preparation method thereof |
| CN113751707B (en) * | 2021-09-14 | 2023-08-22 | 郑州磨料磨具磨削研究所有限公司 | Method for preparing nano carbide particle dispersion strengthening alloy powder |
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| CN105671411A (en) | 2016-06-15 |
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