CN104404348A - Nickel-aluminum-based alloy and preparation method thereof - Google Patents
Nickel-aluminum-based alloy and preparation method thereof Download PDFInfo
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- CN104404348A CN104404348A CN201410720802.XA CN201410720802A CN104404348A CN 104404348 A CN104404348 A CN 104404348A CN 201410720802 A CN201410720802 A CN 201410720802A CN 104404348 A CN104404348 A CN 104404348A
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 69
- 239000000956 alloy Substances 0.000 title claims abstract description 69
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 35
- 230000006835 compression Effects 0.000 claims abstract description 26
- 238000007906 compression Methods 0.000 claims abstract description 26
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 18
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- 229910052796 boron Inorganic materials 0.000 claims abstract description 12
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 12
- 238000010792 warming Methods 0.000 claims description 28
- 241001236644 Lavinia Species 0.000 claims description 20
- 238000013019 agitation Methods 0.000 claims description 20
- 230000006698 induction Effects 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000003756 stirring Methods 0.000 abstract 2
- 238000010923 batch production Methods 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 229910000943 NiAl Inorganic materials 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
Abstract
The invention discloses a nickel-aluminum-based alloy and a preparation method thereof. The preparation method comprises the following steps: putting Ni, Cr and Co into a crucible, suspending Al, Ta, Ni-B and Re above the crucible, vacuuming till the pressure is 2-4*10<-3>Pa, electrifying to melt Ni, Cr and Co metal blocks, heating to be 1560-1600 DEG C, uniformly stirring, respectively putting Ta, Ni-B, Al and Re metal blocks, heating to be 1560-1600 DEG C, uniformly stirring, casting the molten metal into alloy bars at 1560-1600 DEG C, and performing solution treatment on the alloy bars twice, so as to obtain the nickel-aluminum-based alloy. As B, Ta, Cr, Re and Co as reinforcement elements are added into the nickel-aluminum-based alloy, the nickel-aluminum-based alloy disclosed by the invention is excellent in compression strength, plasticity and hardness from the room temperature to 600 DEG C, is good in application prospect and is applicable to industrial batch production as the preparation method of the nickel-aluminum-based alloy is simple and easy to implement.
Description
Technical field
The present invention relates to alloy field, particularly a kind of nickel-aluminum base alloy and preparation method thereof.
Background technology
Intermetallic compound NiAl is desirable high-temperature structural material, has the advantages such as the antioxidant property of high-melting-point (1640 DEG C), high thermal conductivity (70 ~ 80W/mK), low density (5.86g/cm3) and excellence.But temperature-room type plasticity is poor, room temperature fracture resistance is low and hot strength is not enough and high temperature creep drag is low etc., and problem governs the practicalization of NiAl for structural component materials always.For many years, people are from alloying, and in preparation, angle that is raw and external matrix material is set out, and adopts the methods such as solution strengthening, second-phase strength, oxide dispersion intensifying (ODS), improves high temperature resistance intensity and the room temperature compression plasticity of NiAl alloy epitaxy.
During room temperature compression experiment, NiAl has the compression true strain of about 0.05, and compressive strength is about 650MPa; Along with the rising of temperature, intensity reduces, and plasticity increases, and 400 DEG C of compressive strengths are about 500MPa, and compression true strain is about 0.15.Add the compression true strain that 0.5 ~ 10at.%Ag, NiAl-Ag have 0.07 ~ 0.12, compressive strength is 750 ~ 900MPa; Along with the rising of temperature, intensity reduces, and plasticity increases, and 400 DEG C of compressive strengths are about 420 ~ 600MPa, and compression true strain is about 0.10 ~ 0.15.
The NiAl-Ta system alloy of the people such as Zeumer and the Sauthoff research and development of Ma Pu institute of Germany, have good mechanical property, this alloy has good application prospect, particularly their NiAl-2.5Ta-7.5Cr excellent property of preparing.But existing complicated process of preparation, cost is high.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of nickel-aluminum base alloy with high compression-strength and high compression plasticity, and the preparation method of nickel-aluminum base alloy is provided.
The technical scheme that the present invention solves the problem is: a kind of nickel-aluminum base alloy, its composition is NiAl-2.5Ta-7.5Cr-15Co-2B-7.5Re, and namely the atomic percent of Ni, Al, Ta, Cr, Co, B, Re is 32.75:32.75:2.5:7.5:15:2:7.5.
In above-mentioned nickel-aluminum base alloy, under room temperature, the Vickers' hardness of nickel-aluminum base alloy is 650 ~ 663HV, and ultimate compression strength is 1300 ~ 1390MPa, and true strain is 0.60 ~ 0.80; At 300 DEG C, the ultimate compression strength of nickel-aluminum base alloy is 1250 ~ 1290MPa, and true strain is 0.25 ~ 0.27; At 600 DEG C, the ultimate compression strength of nickel-aluminum base alloy is 1550 ~ 1620MPa, and true strain is 0.32 ~ 0.38.
A preparation method for nickel-aluminum base alloy, comprises the following steps:
1) melting in vacuum induction furnace, puts into Ni, Cr, Co in the crucible of vacuum induction furnace, and Al, Ta, Ni-B, Re Al silk hitches and is suspended on above crucible, and being evacuated to vacuum tightness in vacuum induction furnace is 2 ~ 4 × 10
-3pa;
2) energising fusing Ni, Cr, Co metal block, be warming up to molten metal liquid temp and reach 1560 ~ 1600 DEG C, magnetic agitation makes molten metal uniform composition;
3) put into the Ta metal block that Al silk hitches, be warming up to 1560 ~ 1600 DEG C, magnetic agitation is even; Put into the Ni-B metal block that Al silk hitches, be warming up to 1560 ~ 1600 DEG C, magnetic agitation is even; Put into the Al metal block that Al silk hitches, be warming up to 1560 ~ 1600 DEG C, magnetic agitation is even; Put into the Re metal block that Al silk hitches, be warming up to 1560 ~ 1600 DEG C, magnetic agitation is even;
4) at 1560 ~ 1600 DEG C of temperature by step 3) pouring metal melt of gained becomes alloy bar;
5) alloy bar is put into vacuum molybdenum wire furnace, be evacuated to 5 ~ 8 × 10
-3pa, be warming up to 1350 DEG C of insulations 12 hours, heat-up rate is 10 ~ 15 DEG C/min, and stove is cold;
6) vacuum molybdenum wire furnace is evacuated to 5 ~ 8 × 10
-3pa, be warming up to 1150 DEG C of insulations 12 hours, heat-up rate is 10 ~ 15 DEG C/min, and stove is cold, obtains nickel-aluminum base alloy.
In the preparation method of above-mentioned nickel-aluminum base alloy, described step 4) diameter of interalloy rod is 30 millimeters.
Beneficial effect of the present invention is: nickel-aluminum base alloy of the present invention with the addition of B, Ta, Cr, Re and Co as strengthening element, nickel-aluminum base alloy is excellent in compressive strength, plasticity and the hardness of room temperature to 600 DEG C, be have a good application prospect under the applying working condition of stress in load, and preparation method's technique of nickel-aluminum base alloy is simple, be easy to realize, industrial mass manufacture can be applicable to.
Accompanying drawing explanation
Fig. 1 is tissue topography and the facies analysis figure of nickel-aluminum base alloy, and in figure, a is SEM shape appearance figure, and b is X diffracting spectrum.
Fig. 2 is nickel-aluminum base alloy true stress-true strain analysis chart at room temperature.
Fig. 3 is the true stress-true strain analysis chart of nickel-aluminum base alloy at 300 DEG C.
Fig. 4 is the true stress-true strain analysis chart of nickel-aluminum base alloy at 600 DEG C.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiment one:
By Ni, Al, Ta, Cr, Co, Ni-B, the Re of high-purity (weight >99.9%), be that 32.75:32.75:2.5:7.5:15:2:7.5 prepares nickel-aluminum base alloy by the atomic percent of composition Ni, Al, Ta, Cr, Co, B, Re.The chemical composition of nickel-aluminum base alloy is: NiAl-2.5Ta-7.5Cr-15Co-2B-7.5Re, and concrete preparation method is as follows:
1) melting in vacuum induction furnace, puts into Ni, Cr, Co in the crucible of vacuum induction furnace, and Al, Ta, Ni-B, Re Al silk hitches and is suspended on above crucible, and being evacuated to vacuum tightness in vacuum induction furnace is 2 ~ 3 × 10
-3pa;
2) energising fusing Ni, Cr, Co metal block, be warming up to the molten metal temperature after fusing and reach 1580 DEG C, magnetic agitation makes molten metal uniform composition;
3) put into the Ta metal block that Al silk hitches, be warming up to 1580 DEG C, magnetic agitation is even; Put into the Ni-B metal block that Al silk hitches, be warming up to 1580 DEG C, magnetic agitation is even; Put into the Al metal block that Al silk hitches, be warming up to 1580 DEG C, magnetic agitation is even; Put into the Re metal block that Al silk hitches, be warming up to 1580 DEG C, magnetic agitation is even;
4) at 1600 DEG C of temperature by step 3) pouring metal melt of gained becomes diameter to be the alloy bar of 30 millimeters;
5) alloy bar is put into vacuum molybdenum wire furnace, be evacuated to 6 ~ 7 × 10
-3pa, be warming up to 1350 DEG C of insulations 12 hours, heat-up rate is 10 DEG C/min, and stove is cold;
6) vacuum molybdenum wire furnace is evacuated to 6 ~ 7 × 10
-3pa, be warming up to 1150 DEG C of insulations 12 hours, heat-up rate is 10/min, and stove is cold, obtains nickel-aluminum base alloy.
The mechanical property of Gleeble 1500 hot modeling test machine beta alloy, its compressive strain speed is 2 × 10
-3s
-1, nickel-aluminum base alloy is of a size of 4 × 4 × 6 millimeters, and experimental temperature is room temperature ~ 600 DEG C.
Under room temperature, the Vickers' hardness of NiAl-2.5Ta-7.5Cr-15Co-2B-7.5Re alloy is 663HV, and ultimate compression strength is 1384.7MPa, and true strain is 0.775.The ultimate compression strength of NiAl-2.5Ta-7.5Cr alloy is 1209.7MPa, and true strain is 0.069.(as shown in Figure 2)
At 300 DEG C, the ultimate compression strength of NiAl-2.5Ta-7.5Cr-15Co-2B-7.5Re alloy is 1290MPa, and true strain is 0.26.The ultimate compression strength of NiAl-2.5Ta-7.5Cr alloy is 1117.4MPa, and true strain is 0.145.
At 600 DEG C, the ultimate compression strength of NiAl-2.5Ta-7.5Cr-15Co-2B-7.5Re alloy is 1612.0MPa, and true strain is 0.380.The ultimate compression strength of NiAl-2.5Ta-7.5Cr alloy is 992.2MPa, and true strain is 0.126.
Embodiment two:
By Ni, Al, Ta, Cr, Co, Ni-B, the Re of high-purity (weight >99.9%), be that 32.75:32.75:2.5:7.5:15:2:7.5 prepares nickel-aluminum base alloy by the atomic percent of composition Ni, Al, Ta, Cr, Co, B, Re.The chemical composition of nickel-aluminum base alloy is: NiAl-2.5Ta-7.5Cr-15Co-2B-7.5Re, and concrete preparation method is as follows:
1) melting in vacuum induction furnace, puts into Ni, Cr, Co in the crucible of vacuum induction furnace, and Al, Ta, Ni-B, Re Al silk hitches and is suspended on above crucible, and being evacuated to vacuum tightness in vacuum induction furnace is 3 ~ 4 × 10
-3pa;
2) energising fusing Ni, Cr, Co metal block, be warming up to molten metal liquid temp and reach 1590 DEG C, magnetic agitation makes molten metal uniform composition;
3) put into the Ta metal block that Al silk hitches, be warming up to 1590 DEG C, magnetic agitation is even; Put into the Ni-B metal block that Al silk hitches, be warming up to 1590 DEG C, magnetic agitation is even; Put into the Al metal block that Al silk hitches, be warming up to 1590 DEG C, magnetic agitation is even; Put into the Re metal block that Al silk hitches, be warming up to 1590 DEG C, magnetic agitation is even;
4) at 1590 DEG C of temperature by step 3) pouring metal melt of gained becomes diameter to be the alloy bar of 30 millimeters;
5) alloy bar is put into vacuum molybdenum wire furnace, be evacuated to 5 ~ 6 × 10
-3pa, be warming up to 1350 DEG C of insulations 12 hours, heat-up rate is 15 DEG C/min, and stove is cold;
6) vacuum molybdenum wire furnace is evacuated to 5 ~ 6 × 10
-3pa, be warming up to 1150 DEG C of insulations 12 hours, heat-up rate is 15 DEG C/min, and stove is cold, obtains nickel-aluminum base alloy.
The mechanical property of Gleeble 1500 hot modeling test machine beta alloy, its compressive strain speed is 2 × 10
-3s
-1, alloy is of a size of 4 × 4 × 6 millimeters, and experimental temperature is room temperature ~ 600 DEG C.
Under room temperature, the Vickers' hardness of NiAl-2.5Ta-7.5Cr-15Co-2B-7.5Re alloy is 650HV, and ultimate compression strength is 1250MPa, and true strain is 0.65.The ultimate compression strength of NiAl-2.5Ta-7.5Cr alloy is 1209.7MPa, and true strain is 0.069.
At 300 DEG C, the ultimate compression strength of NiAl-2.5Ta-7.5Cr-15Co-2B-7.5Re alloy is 1280.6 MPa, and true strain is 0.267.The ultimate compression strength of NiAl-2.5Ta-7.5Cr alloy is 1117.4MPa, and true strain is 0.145.(as shown in Figure 3)
At 600 DEG C, the ultimate compression strength of NiAl-2.5Ta-7.5Cr-15Co-2B-7.5Re alloy is 1611.5MPa, and true strain is 0.374.The ultimate compression strength of NiAl-2.5Ta-7.5Cr alloy is 992.2MPa, and true strain is 0.126.(as shown in Figure 4)
Claims (4)
1. a nickel-aluminum base alloy, its composition is NiAl-2.5Ta-7.5Cr-15Co-2B-7.5Re, and namely the atomic percent of Ni, Al, Ta, Cr, Co, B, Re is 32.75:32.75:2.5:7.5:15:2:7.5.
2. nickel-aluminum base alloy as claimed in claim 1, it is characterized in that: under room temperature, the Vickers' hardness of nickel-aluminum base alloy is 650 ~ 663HV, and ultimate compression strength is 1300 ~ 1390MPa, and true strain is 0.60 ~ 0.80; At 300 DEG C, the ultimate compression strength of nickel-aluminum base alloy is 1250 ~ 1290MPa, and true strain is 0.25 ~ 0.27; At 600 DEG C, the ultimate compression strength of nickel-aluminum base alloy is 1550 ~ 1620MPa, and true strain is 0.32 ~ 0.38.
3. a preparation method for nickel-aluminum base alloy as claimed in claim 2, comprises the following steps:
1) melting in vacuum induction furnace, puts into Ni, Cr, Co in the crucible of vacuum induction furnace, and Al, Ta, Ni-B, Re Al silk hitches and is suspended on above crucible, and being evacuated to vacuum tightness in vacuum induction furnace is 2 ~ 4 × 10
-3pa;
2) energising fusing Ni, Cr, Co metal block, be warming up to molten metal liquid temp and reach 1560 ~ 1600 DEG C, magnetic agitation makes molten metal uniform composition;
3) put into the Ta metal block that Al silk hitches, be warming up to 1560 ~ 1600 DEG C, magnetic agitation is even; Put into the Ni-B metal block that Al silk hitches, be warming up to 1560 ~ 1600 DEG C, magnetic agitation is even; Put into the Al metal block that Al silk hitches, be warming up to 1560 ~ 1600 DEG C, magnetic agitation is even; Put into the Re metal block that Al silk hitches, be warming up to 1560 ~ 1600 DEG C, magnetic agitation is even;
4) at 1560 ~ 1600 DEG C of temperature by step 3) pouring metal melt of gained becomes alloy bar;
5) alloy bar is put into vacuum molybdenum wire furnace, be evacuated to 5 ~ 8 × 10
-3pa, be warming up to 1350 DEG C of insulations 12 hours, heat-up rate is 10 ~ 15 DEG C/min, and stove is cold;
6) vacuum molybdenum wire furnace is evacuated to 5 ~ 8 × 10
-3pa, be warming up to 1150 DEG C of insulations 12 hours, heat-up rate is 10 ~ 15 DEG C/min, and stove is cold, obtains nickel-aluminum base alloy.
4. the preparation method of nickel-aluminum base alloy as claimed in claim 3, is characterized in that: described step 4) diameter of interalloy rod is 30 millimeters.
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| CN201410720802.XA CN104404348B (en) | 2014-12-02 | 2014-12-02 | A kind of nickel-aluminum base alloy and its preparation method |
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| CN104404348B CN104404348B (en) | 2016-06-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676328A (en) * | 2016-12-16 | 2017-05-17 | 中南大学 | B-doped NiAl alloy as well as preparation method and application thereof |
| CN106676329A (en) * | 2016-12-16 | 2017-05-17 | 中南大学 | NiAl alloy doped with rare earth element and preparing method and application of NiAl alloy |
| CN106676330A (en) * | 2016-12-16 | 2017-05-17 | 中南大学 | NiAl alloy and preparing method and application of NiAl alloy |
| CN112458351A (en) * | 2020-10-22 | 2021-03-09 | 中国人民解放军陆军装甲兵学院 | High compressive strength nickel-cobalt-based high temperature alloy |
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| CN101148728A (en) * | 2007-10-19 | 2008-03-26 | 北京航空航天大学 | NiAl-Cr(Mo) biphase eutectic crystal intermetallic compound modified by Ta |
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2014
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676328A (en) * | 2016-12-16 | 2017-05-17 | 中南大学 | B-doped NiAl alloy as well as preparation method and application thereof |
| CN106676329A (en) * | 2016-12-16 | 2017-05-17 | 中南大学 | NiAl alloy doped with rare earth element and preparing method and application of NiAl alloy |
| CN106676330A (en) * | 2016-12-16 | 2017-05-17 | 中南大学 | NiAl alloy and preparing method and application of NiAl alloy |
| CN106676330B (en) * | 2016-12-16 | 2019-03-05 | 中南大学 | A kind of NiAl alloy epitaxy and its preparation method and application |
| CN106676328B (en) * | 2016-12-16 | 2019-03-05 | 中南大学 | A kind of NiAl alloy epitaxy and its preparation method and application for mixing B |
| CN106676329B (en) * | 2016-12-16 | 2019-04-12 | 中南大学 | A kind of NiAl alloy epitaxy of doped rare earth element and its preparation method and application |
| CN112458351A (en) * | 2020-10-22 | 2021-03-09 | 中国人民解放军陆军装甲兵学院 | High compressive strength nickel-cobalt-based high temperature alloy |
| CN112458351B (en) * | 2020-10-22 | 2021-10-15 | 中国人民解放军陆军装甲兵学院 | High compressive strength nickel-cobalt-based high temperature alloy |
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| CN104404348B (en) | 2016-06-08 |
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Effective date of registration: 20231225 Address after: Room 708, 7th Floor, Building 1, Innovation and Entrepreneurship Center, No. 9 Chuanqi West Road, Xiangtan Economic Development Zone, Xiangtan City, Hunan Province, 411100 Patentee after: Hunan Guosheng New Material Technology Co.,Ltd. Address before: 411201 No. 2 stone wharf, Yuhu District, Hunan, Xiangtan Patentee before: HUNAN University OF SCIENCE AND TECHNOLOGY |