CN106676366B - The preparation method of high-temperature alloy - Google Patents
The preparation method of high-temperature alloy Download PDFInfo
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- CN106676366B CN106676366B CN201710033887.8A CN201710033887A CN106676366B CN 106676366 B CN106676366 B CN 106676366B CN 201710033887 A CN201710033887 A CN 201710033887A CN 106676366 B CN106676366 B CN 106676366B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a kind of high-temperature alloys comprising following element by weight percentage: Cr:10-11；Co:2-3；C:0.3-0.5；Mo:3-4；W:10；La:0.005-0.02；Si:0.1-0.3；Al:1-2；Ti:2-3；Nd:5-7；Nb:0.7-1；Re:5-6；Fe:15-20.High-temperature alloy of the invention can be while improving iron content by the addition of Cr, Co, Mo, W, La, Si, Al, Ti, Nd, Nb and Re element, and creep rupture strength and high-temperature mechanical property significantly improve, and ensure that the thermal stability of high temperature alloy.The invention also discloses a kind of preparation methods of high-temperature alloy.
Description
Technical field
The present invention relates to a kind of metal material more particularly to a kind of high-temperature alloys.
Background technique
Aviation, the turbo blade of naval vessels and industrial gas turbine, guide vane, the turbine disk, high-pressure compressor disk and combustion
The working environment for burning the high-temperature components such as room is all high temperature, therefore must use high-temperature alloy under these circumstances.
Currently, corrosion-and high-temp-resistant alloy is divided into three classes, ferrous alloy (stainless steel), nickel-base alloy, cobalt-base alloys are iron-based
High temperature alloy is that austenitic stainless steel grows up, and contains the elements such as a certain amount of chromium and nickel.It is moderate temperature (600~
800 DEG C) under the conditions of the important materials that use, there is preferable medium temperature mechanical property and good hot-workability, alloying component
Fairly simple, cost is relatively low.It is mainly used for making the turbine disk on aero-engine and industry gas turbine, guiding can also be made
Blade, turbo blade, combustion chamber and other bearing members, fastener etc..Another purposes is the exhaust gas made on diesel engine
Turbine.
Nickel-base heat resisting superalloy is that have using nickel as matrix (content is generally higher than 50%), within the scope of 650-1000 DEG C
The high temperature alloy of higher intensity and good inoxidizability, resistance to combustion gas corrosion ability.
Nickel-base alloy is most widely used, the highest a kind of alloy of elevated temperature strength in high temperature alloy.Its main cause, first is that nickel
More alloying element can be dissolved in based alloy, and is able to maintain preferable stability；Second is that the orderly gold of coherence can be formed
Compound is mutually used as hardening constituent between category, makes effectively being strengthened for alloy, obtains and closes than iron-base superalloy and cobalt-based high-temperature
The higher elevated temperature strength of gold；Third is that the nickel-base alloy containing chromium has more better than iron-base superalloy anti-oxidant and resistance to combustion gas corrosion
Ability.Nickel-base alloy contains ten multiple elements, and wherein Cr mainly serves anti-oxidant and anticorrosive, and other elements mainly play reinforcing
Effect.Solid solution strengthened alloy and precipitation strengthening alloy can be divided into according to their invigoration effect mode: solution strengthening element, such as
Tungsten, molybdenum, cobalt, chromium, vanadium etc.；Precipitation-strengthening element, such as aluminium, titanium, niobium and tantalum；Boundary-strengthening element, such as boron, zirconium, magnesium and rare earth member
Element etc..Nickel-base alloy is the comparative maturity developed at present, the wider alloy of comprehensive aspect application range.
Although nickel-base alloy comprehensive performance with higher, the performance of ferrous alloy is improved, and use in part
It is required that low occasion, substitutes a trend of the current development in science and technology of nickel-base alloy.
Summary of the invention
It is an object of the present invention to provide a kind of high-temperature alloys, can be while improving iron content, creep rupture strength
It is significantly improved with high-temperature mechanical property, ensure that the thermal stability of high temperature alloy.The invention also discloses a kind of high-temperature alloys
Preparation method.
The present invention solves technical problem and adopts the following technical scheme that a kind of high-temperature alloy comprising with weight percent
The following element of meter: Cr:10-11；Co:2-3；C:0.3-0.5；Mo:3-4；W:10；La:0.005-0.02；Si:0.1-0.3；
Al:1-2；Ti:2-3；Nd:5-7；Nb:0.7-1；Re:5-6；Fe:15-20；Impurity caused by surplus is Ni and produces.
Optionally, including following element by weight percentage: Cr:10.5；Co:2.5；C:0.4；Mo:3.5；W:10；
La:0.01；Si:0.2；Al:1.5；Ti:2.5；Nd:6；Nb:0.9；Re:5.5；Fe:18；Caused by surplus is Ni and production
Impurity.
The present invention solves technical problem and also adopts the following technical scheme that a kind of preparation for preparing above-mentioned high-temperature alloy of
Method comprising:
S10, nickel-base alloy raw material is put into the vacuum melting room in smelting furnace, vacuum melting room is vacuumized, and will
The vacuum degree control of vacuum melting room is in 10-15Pa；The nickel-base alloy is Ni-Cr-Mo-W alloy；
S20, vacuum melting room is heated, makes the nickel-base alloy melting sources in vacuum melting room, and by vacuum melting room
Temperature be maintained at 1580 ± 10 DEG C, be completely melt nickel-base alloy raw material, and smelt 25min；
S30, the temperature for maintaining vacuum melting room, add iron-base superalloy thereto, all molten to iron-base superalloy
After change, stirs 5 minutes, be cooled to 1400 DEG C；The iron-base superalloy is Fe-Ni-Co-Cr alloy；
S40, Al and Ti is added into vacuum melting room, the temperature of vacuum metling room is increased to 1600 DEG C, to Al and Ti
All fusings stir 2 minutes, and keep the temperature 2-3 minutes；
S50, La, Si, Nd, Nb and Re are added into vacuum melting room, after La, Si, Nd, Nb and Re all fusing, stir
It mixes 2 minutes, obtains molten metal；
S60, it is poured while filtering using ceramic filter, obtains high-temperature alloy ingot；
S70, carry out Homogenization Treatments three times to high-temperature alloy ingot: the temperature of homogenization is 1000 DEG C for the first time, the time
It is 20 hours, 300 DEG C or more of heating and cooling velocity are 200 DEG C/h, and the temperature of second of homogenization is 1200 DEG C, the time
It is 36 hours, 300 DEG C or more of heating and cooling velocity are 200 DEG C/h, and the temperature of third time homogenization is 1300 DEG C, the time
It is 50 hours, 300 DEG C or more of heating and cooling velocity are 200 DEG C/h.
S80, conducting forging processing is carried out to the high-temperature alloy ingot after Homogenization Treatments, the temperature of forging is 1120-1190 DEG C；
S90, solution treatment is carried out to the high-temperature alloy ingot after forging, the temperature of solution treatment is 1000 DEG C, and the time is
1.5 hour；
S95, the high-temperature alloy ingot after forging is kept the temperature 7 hours at 750 DEG C, is furnace-cooled to 600 DEG C with 45 DEG C/h,
Heat preservation 9 hours, it is air-cooled.
The invention has the following beneficial effects: high-temperature alloy of the invention, by Cr, Co, Mo, W, La, Si, Al, Ti,
The addition of Nd, Nb and Re element, can be while improving iron content, and performance resistant to high temperature is not decreased obviously, Er Qiefu
Various severe use environments are closed, the cost of company has been saved.The invention also discloses a kind of preparation methods of high-temperature alloy.
The high temperature alloy of the prior art and high temperature alloy mechanical property representative value of the invention comparison such as table 1.
Specific embodiment
Technical solution of the present invention is further elaborated below with reference to embodiment.
Embodiment 1
Present embodiments provide a kind of high-temperature alloy comprising following element by weight percentage: Cr:10-11；
Co:2-3；C:0.3-0.5；Mo:3-4；W:10；La:0.005-0.02；Si:0.1-0.3；Al:1-2；Ti:2-3；Nd:5-7；
Nb:0.7-1；Re:5-6；Fe:15-20；Impurity caused by surplus is Ni and produces.
Above-mentioned high-temperature alloy can be prepared by following step:
S10, nickel-base alloy raw material is put into the vacuum melting room in smelting furnace, vacuum melting room is vacuumized, and will
The vacuum degree control of vacuum melting room is in 10-15Pa；The nickel-base alloy is Ni-Cr-Mo-W alloy；
S20, vacuum melting room is heated, makes the nickel-base alloy melting sources in vacuum melting room, and by vacuum melting room
Temperature be maintained at 1580 ± 10 DEG C, be completely melt nickel-base alloy raw material, and smelt 25min；
S30, the temperature for maintaining vacuum melting room, add iron-base superalloy thereto, all molten to iron-base superalloy
After change, stirs 5 minutes, be cooled to 1400 DEG C；The iron-base superalloy is Fe-Ni-Co-Cr alloy；
S40, Al and Ti is added into vacuum melting room, the temperature of vacuum metling room is increased to 1600 DEG C, to Al and Ti
All fusings stir 2 minutes, and keep the temperature 2-3 minutes；
S50, La, Si, Nd, Nb and Re are added into vacuum melting room, after La, Si, Nd, Nb and Re all fusing, stir
It mixes 2 minutes, obtains molten metal；
S60, it is poured while filtering using ceramic filter, obtains high-temperature alloy ingot；
S70, carry out Homogenization Treatments three times to high-temperature alloy ingot: the temperature of homogenization is 1000 DEG C for the first time, the time
It is 20 hours, 300 DEG C or more of heating and cooling velocity are 200 DEG C/h, and the temperature of second of homogenization is 1200 DEG C, the time
It is 36 hours, 300 DEG C or more of heating and cooling velocity are 200 DEG C/h, and the temperature of third time homogenization is 1300 DEG C, the time
It is 50 hours, 300 DEG C or more of heating and cooling velocity are 200 DEG C/h.
S80, conducting forging processing is carried out to the high-temperature alloy ingot after Homogenization Treatments, the temperature of forging is 1120-1190 DEG C；
S90, solution treatment is carried out to the high-temperature alloy ingot after forging, the temperature of solution treatment is 1000 DEG C, and the time is
1.5 hour；
S95, the high-temperature alloy ingot after forging is kept the temperature 7 hours at 750 DEG C, is furnace-cooled to 600 DEG C with 45 DEG C/h,
Heat preservation 9 hours, it is air-cooled.
It is sampled from test block, carries out room temperature and 1000 DEG C of drawing by high temperature respectively, the range of its tensile strength Rm when room temperature
For 1150~1210MPa, Rp0.2Range is 995~1035MPa, and the range of elongation percentage is 28~34%.At 1000 DEG C, tension
The range of intensity Rm is 1100~1160MPa, Rp0.2Range is 960~1000MPa, and the range of elongation percentage is 26~34%.
High-temperature alloy of the invention passes through the addition of Cr, Co, Mo, W, La, Si, Al, Ti, Nd, Nb and Re element, energy
Enough while improving iron content, creep rupture strength and high-temperature mechanical property are significantly improved, and ensure that the heat of high temperature alloy
Stability.The invention also discloses a kind of preparation methods of high-temperature alloy.
Embodiment 2
A kind of high-temperature alloy is present embodiments provided, difference from Example 1 is that the content of each element is different,
Specifically, the high-temperature alloy includes following element by weight percentage: Cr:10.5 in the present embodiment；Co:
2.5；C:0.4；Mo:3.5；W:10；La:0.01；Si:0.2；Al:1.5；Ti:2.5；Nd:6；Nb:0.9；Re:5.5；Fe:18；
Impurity caused by surplus is Ni and produces.
It being sampled from test block, carries out room temperature and 1000 DEG C of drawing by high temperature, when room temperature, tensile strength Rm is 1195MPa,
Rp0.2For 1003MPa, elongation percentage 32%, 1000 DEG C, tensile strength Rm1105MPa, Rp0.2For 980MPa, elongation percentage is
28%, 1000 DEG C are carried out, the duration of 500MPa duration running is 100h.
The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (1)
1. a kind of preparation method of high-temperature alloy, the high-temperature alloy includes following element by weight percentage:
Cr:10-11；
Co:2-3；
C:0.3-0.5；
Mo:3-4；
W:10；
La:0.005-0.02；
Si:0.1-0.3；
Al:1-2；
Ti:2-3；
Nd:5-7；
Nb:0.7-1；
Re:5-6；
Fe:15-20；
Impurity caused by surplus is Ni and produces,
It is characterized in that, the preparation method includes:
S10, nickel-base alloy raw material is put into the vacuum melting room in smelting furnace, vacuum melting room is vacuumized, and by vacuum
The vacuum degree control of working chamber is in 10-15Pa；The nickel-base alloy is Ni-Cr-Mo-W alloy；
S20, vacuum melting room is heated, makes the nickel-base alloy melting sources in vacuum melting room, and by the temperature of vacuum melting room
Degree is maintained at 1580 ± 10 DEG C, is completely melt nickel-base alloy raw material, and smelt 25min；
S30, the temperature for maintaining vacuum melting room, add iron-base superalloy thereto, after iron-base superalloy all fusing,
Stirring 5 minutes, is cooled to 1400 DEG C；The iron-base superalloy is Fe-Ni-Co-Cr alloy；
S40, Al and Ti is added into vacuum melting room, the temperature of vacuum metling room is increased to 1600 DEG C, it is whole to Al and Ti
Fusing stirs 2 minutes, and keeps the temperature 2-3 minutes；
S50, La, Si, Nd, Nb and Re are added into vacuum melting room, after La, Si, Nd, Nb and Re all fusing, stir 2 points
Clock obtains molten metal；
S60, it is poured while filtering using ceramic filter, obtains high-temperature alloy ingot；
S70, carry out Homogenization Treatments three times to high-temperature alloy ingot: the temperature of homogenization is 1000 DEG C for the first time, the time 20
Hour, 300 DEG C or more of heating and cooling velocity are 200 DEG C/h, and the temperature of second of homogenization is 1200 DEG C, the time 36
Hour, 300 DEG C or more of heating and cooling velocity are 200 DEG C/h, and the temperature of third time homogenization is 1300 DEG C, the time 50
Hour, 300 DEG C or more of heating and cooling velocity are 200 DEG C/h；
S80, conducting forging processing is carried out to the high-temperature alloy ingot after Homogenization Treatments, the temperature of forging is 1120-1190 DEG C；
S90, solution treatment is carried out to the high-temperature alloy ingot after forging, the temperature of solution treatment is 1000 DEG C, and the time is 1.5 small
When；
S95, the high-temperature alloy ingot after solution treatment is kept the temperature 7 hours at 750 DEG C, is furnace-cooled to 600 DEG C with 45 DEG C/h,
Heat preservation 9 hours, it is air-cooled.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1463296A (en) * | 2001-06-19 | 2003-12-24 | 住友金属工业株式会社 | Metal material having good resistance to metal dusting |
| CN1854317A (en) * | 2005-04-19 | 2006-11-01 | 沈阳大陆激光技术有限公司 | Powdery alloy processing material in site by movable laser smelt-coating process |
| CN1886525A (en) * | 2003-11-27 | 2006-12-27 | 西门子公司 | High temperature resistant component |
| CN101087894A (en) * | 2004-12-23 | 2007-12-12 | 西门子公司 | A Ni based alloy, a component, a gas turbine arrangement and use of pd in connection with such an alloy |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1463296A (en) * | 2001-06-19 | 2003-12-24 | 住友金属工业株式会社 | Metal material having good resistance to metal dusting |
| CN1886525A (en) * | 2003-11-27 | 2006-12-27 | 西门子公司 | High temperature resistant component |
| CN101087894A (en) * | 2004-12-23 | 2007-12-12 | 西门子公司 | A Ni based alloy, a component, a gas turbine arrangement and use of pd in connection with such an alloy |
| CN1854317A (en) * | 2005-04-19 | 2006-11-01 | 沈阳大陆激光技术有限公司 | Powdery alloy processing material in site by movable laser smelt-coating process |
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