CN1127795A - Directional solidification of best cast nickel based high-temp. alloy - Google Patents
Directional solidification of best cast nickel based high-temp. alloy Download PDFInfo
- Publication number
- CN1127795A CN1127795A CN 95110023 CN95110023A CN1127795A CN 1127795 A CN1127795 A CN 1127795A CN 95110023 CN95110023 CN 95110023 CN 95110023 A CN95110023 A CN 95110023A CN 1127795 A CN1127795 A CN 1127795A
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- Prior art keywords
- alloy
- directional solidification
- temp
- based high
- nickel based
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- 239000000956 alloy Substances 0.000 title claims abstract description 19
- 238000007711 solidification Methods 0.000 title claims abstract description 6
- 230000008023 solidification Effects 0.000 title claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims description 12
- 229910045601 alloy Inorganic materials 0.000 title abstract description 17
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 229910000601 superalloy Inorganic materials 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000007669 thermal treatment Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 229910052787 antimony Inorganic materials 0.000 abstract 1
- 229910052785 arsenic Inorganic materials 0.000 abstract 1
- 229910052797 bismuth Inorganic materials 0.000 abstract 1
- 229910052796 boron Inorganic materials 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052745 lead Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 229910052717 sulfur Inorganic materials 0.000 abstract 1
- 229910052718 tin Inorganic materials 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The quality cast high-temp Ni-base alloy contains C, Cr, Al, Ti, Mo, Co, V, B, Y, Ni, S, P, Fe, Si, Mn, Pb, As, Sb, Bi and Sn, and features its directional solidification. It may be used in aviation, spaceflight, ship and electric generation industries.
Description
The present invention relates to metallic substance, specifically a kind of high-quality cast nickel-base alloy.
Be used to make the superalloy of aero engine turbine blades, normally selecting composition for use is C, 0.18; Cr, 10; Co, 15; Al, 5.5; Ti, 4.5/5; Mo, 3; V, 0.5/1; Zr, 0.05/1; B, IN100 alloy and the composition of 0.001/0.002 (being weight %) are C, 0.18; Cr, 9.5; Co, 10; Al, 5.5; Ti, 4.65; Mo, 2.5; V, 0.95; Zr, 0.06; B, the K17G alloy of 0.015 (being weight %).Above-mentioned these two kinds of alloys are the conventional cast alloy, use to have the equi-axed crystal tissue under as cast condition, and creep rupture strength is lower, can not satisfy the more requirement of high-performance aero engine turbine blades.Simultaneously, all stricter requirement is not proposed micro impurity element in the composition.
The objective of the invention is shortcoming, a kind of good orientation solidifying process performance that has is provided, prevent that the superalloy that creep rupture strength is high from appearring in thermal crack at above-mentioned existence.
Technical essential of the present invention, Chemical Composition are C, 0.01～0.30%; Cr, 8～10%; Al, 4～6%; Ti, 3.5～5.%; Mo, 2～4%; Co, 8～12%; V, 0.3～1.2%; B, 0.005～0.030%; Y, 0.00～0.50%; Ni, surplus; S≤0.008%; P≤0.005%; Fe≤0.5%; Si≤0.2%; Mn≤0.2%; Pb≤0.0005%; As≤0.001%; Sb≤0.001%; Bi≤0.0005%; The alloy material of Sn≤0.001% (all being weight percentage), adopting molten steel temperature is 1480～1550 ℃; 1450～1550 ℃ of mould shell temperatures; Drawing velocity 6～9mm/min; 50～100 ℃/cm of thermograde, reaching through system is 1150～1250 ℃, is incubated 1～8 hour, air cooling; 900～1000 ℃, also air cooling thermal treatment is made to be incubated 8～16 hours.
The present invention and alloy IN100 of the same type and K17G are relatively, do not contain alloy element Zr, help improving the directional freeze performance, prevent that thermal crack from occurring, added rare earth element yttrium,, adopted directional solidification processes to make the crystallographic orientation part to improve the lateral performance of alloy, eliminate deleterious horizontal crystal boundary, can obviously improve the creep enduring quality.With IN100 and K17G alloy ratio, alloy is not that as cast condition is used, but as-heat-treated condition is used.This directional solidification of best cast nickel based high superalloy can satisfy the demand of gas turbines such as Aeronautics and Astronautics, naval vessel and generating with the high temperature component.
Embodiment 1
1) directional process: 1480 ℃ of mould shell temperatures, 1500 ℃ of molten steel temperatures, drawing velocity 7mm/min, 80 ℃/cm of thermograde.
2) alloy ingredient: C, 0.16; Cr, 8.86; Co, 9.99; Mo, 3.18; V, 0.74; B, 0.017; Al, 5.38; Ti, 4.70; Ni, surplus; P＜0.0009; Si＜0.005; S＜0.006; Mn, 0.10; Pb＜0.0005; As＜0.001; Sb＜0.001; Bi＜0.0005; Sn＜0.001; (being weight %)
3) thermal treatment: 1220 ℃, 4h, air cooling+980 ℃, 16h, air cooling
4) mechanical property
The instantaneous stretching performance
σ
b(MPa)?σ
0.2(MPa)?δ(％) ψ(％)
Room temperature 1209.0 775.0 18 19
900℃ 787.0 661.0 32 43
Enduring quality
τ(h) δ(％) ψ(％)
760℃，725MPa?116.0 21.0 24.0
980℃，216MPa 74.0 35.0 45.0
Embodiment 2
1) directional process: 1500 ℃ of mould shell temperatures, 1510 ℃ of molten steel temperatures, drawing velocity 6mm/min, 70 ℃/cm of thermograde.
2) alloy ingredient: C, 0.17; Cr, 8.91; Co, 9.85; Mo, 3.05; V, 0.65; B, 0.018; Al, 5.49; Ti, 4.44; Ni, surplus; P, 0.005; S, 0.006; Si, 0.092; Y, 0.028; Pb＜0.0005; As＜0.001; Sb＜0.001; Bi＜0.0005; Sn＜0.001; (being weight %)
3) thermal treatment is 1220 ℃, 2h, air cooling+980 ℃, 16h, air cooling
4) mechanical property:
The instantaneous stretching performance
σ
b(MPa) σ
0.2(MPa) δ(％) ψ(％)
Room temperature 1,012 777 10.0 15.0
900℃ 774 671 35.0 47.0
Enduring quality
τ(h) δ(％) ψ(％)
760℃，725MPa 163.0 20.0 23.5
980℃，216MPa 68.0 23.1 40.0
Comparative example
1. compare with alloy IN731 of the same type and domestic K17G, enduring quality increases substantially
τ(h) δ(％) ψ(％) DZ17G 760℃，735MPa 116～163 21.0 24.0 K17G 760℃，686MPa 56 3.9 DZ17G 980℃，216MPa 68～74 23.1～35.0 45.0～47.0℃ K17G 980℃，200MPa 43.4 5.6
Can know from above-mentioned data and to find out that DZ17G is in same temperature and stress ratio K17G alloy is wanted under the big condition, when lasting with and rupture ductility all obviously improved.
2. compare with alloy IN731 of the same type and domestic K17G, room temperature and high temperature instantaneous stretching plasticity have clear improvement
σ
b(MPa) σ
0.2(MPa) δ(％) ψ(％)
Room temperature DZ17G 1012～1,209 775～777 10～18 15～19
K17G 1027 823 11.2 14.1
900℃?DZ17G 774～787 661～671 32～35 43～47
K17G 762 635 9.3 12.9
Claims (1)
1. directional solidification of best cast nickel based high superalloy, it is characterized in that adopting Chemical Composition is C, 0.01～0.30%; Cr, 8～10%; Al, 4～6%; Ti, 3.5～5.5%; Mo, 2～4%; Co, 8～12%; V, 0.3～1.2%; B, 0.005～0.030%; Y, 0.00～0.50%; Ni, surplus; S≤0.008%; P≤0.005%; Fe≤0.5%; Si≤0.2%; Mn≤0.2%; Pb≤0.005%; As≤0.001%; Sb≤0.001%; Bi≤0.0005%; The alloy material of Sn≤0.001% (all being weight percentage), adopting molten steel temperature is 1480～1550 ℃; 1450～1550 ℃ of mould shell temperatures; Drawing velocity 6～9mm/min; 50～100 ℃/cm of thermograde, reaching through system is 1150～1250 ℃, is incubated 1～8 hour, air cooling; 900～1000 ℃, also air cooling thermal treatment is made to be incubated 8～16 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95110023A CN1053708C (en) | 1995-01-26 | 1995-01-26 | Directional solidification of best cast nickel based high-temp. alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95110023A CN1053708C (en) | 1995-01-26 | 1995-01-26 | Directional solidification of best cast nickel based high-temp. alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1127795A true CN1127795A (en) | 1996-07-31 |
| CN1053708C CN1053708C (en) | 2000-06-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95110023A Expired - Fee Related CN1053708C (en) | 1995-01-26 | 1995-01-26 | Directional solidification of best cast nickel based high-temp. alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1053708C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100543164C (en) * | 2007-04-25 | 2009-09-23 | 中国科学院金属研究所 | A kind of directional solidification heat corrosion resistant nickel base cast superalloy and preparation method thereof |
| CN101121977B (en) * | 2006-08-09 | 2010-05-12 | 中国科学院金属研究所 | Directional solidification nickel-base high-temperature alloy and heat treatment process thereof |
| CN103276331A (en) * | 2013-05-06 | 2013-09-04 | 无锡山发精铸科技有限公司 | Method for eliminating shrinkage defect of nickel-based turbine blade |
| CN105438637A (en) * | 2015-12-24 | 2016-03-30 | 常熟市新冶机械制造有限公司 | Morgan line bundling machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3162552D1 (en) * | 1980-01-17 | 1984-04-19 | Cannon Muskegon Corp | Nickel base alloy and turbine engine blade cast therefrom |
-
1995
- 1995-01-26 CN CN95110023A patent/CN1053708C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121977B (en) * | 2006-08-09 | 2010-05-12 | 中国科学院金属研究所 | Directional solidification nickel-base high-temperature alloy and heat treatment process thereof |
| CN100543164C (en) * | 2007-04-25 | 2009-09-23 | 中国科学院金属研究所 | A kind of directional solidification heat corrosion resistant nickel base cast superalloy and preparation method thereof |
| CN103276331A (en) * | 2013-05-06 | 2013-09-04 | 无锡山发精铸科技有限公司 | Method for eliminating shrinkage defect of nickel-based turbine blade |
| CN105438637A (en) * | 2015-12-24 | 2016-03-30 | 常熟市新冶机械制造有限公司 | Morgan line bundling machine |
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| Publication number | Publication date |
|---|---|
| CN1053708C (en) | 2000-06-21 |
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