EP0760869A1 - Intermetallische nickel-aluminium-basislegierung - Google Patents
Intermetallische nickel-aluminium-basislegierungInfo
- Publication number
- EP0760869A1 EP0760869A1 EP95920844A EP95920844A EP0760869A1 EP 0760869 A1 EP0760869 A1 EP 0760869A1 EP 95920844 A EP95920844 A EP 95920844A EP 95920844 A EP95920844 A EP 95920844A EP 0760869 A1 EP0760869 A1 EP 0760869A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chromium
- tantalum
- nial
- alloy
- alloy according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 42
- 239000000956 alloy Substances 0.000 title claims abstract description 42
- 239000011651 chromium Substances 0.000 claims abstract description 30
- 229910000943 NiAl Inorganic materials 0.000 claims abstract description 28
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 25
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 20
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 19
- 230000003647 oxidation Effects 0.000 claims abstract description 10
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 10
- 229910001068 laves phase Inorganic materials 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000002244 precipitate Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 230000029142 excretion Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 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
- 239000000203 mixture Substances 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
- 229910052785 arsenic Inorganic materials 0.000 claims 1
- 229910052738 indium Inorganic materials 0.000 claims 1
- 230000003064 anti-oxidating effect Effects 0.000 abstract 1
- 230000008646 thermal stress Effects 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 229910000601 superalloy Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910000599 Cr alloy Inorganic materials 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000012669 compression test Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 101000618135 Homo sapiens Sperm-associated antigen 1 Proteins 0.000 description 1
- 229910001005 Ni3Al Inorganic materials 0.000 description 1
- 102100021916 Sperm-associated antigen 1 Human genes 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000001995 intermetallic alloy Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 238000011282 treatment 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
- 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%
-
- 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
-
- 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
Definitions
- the invention relates to an intermetallic nickel aluminum base alloy which has the binary phase NiAl.
- the invention further relates to the use of the intermetallic nickel-aluminum base alloy.
- DE-AS 18 12 144 describes a process for producing a high-strength nickel-aluminum material with good resistance to oxidation.
- nickel powder is mixed with aluminum powder and then pressed and cold-formed, so that a self-supporting and coherent shaped body with a fibrous or lamenarene
- connection NissAl is also created. This solid solution as well as the compound Ni3Al could be verified with X-ray analysis. The extent to which other connections between nickel and aluminum can be achieved with the method cannot be found in the design specification.
- the object of the invention is to improve the thermo-mechanical properties of a nickel-aluminum alloy. These include in particular the heat resistance, the oxidation resistance and the thermal shock resistance. Another object of the invention is to provide a use of such an improved nickel-aluminum alloy.
- the object directed to a nickel-aluminum alloy is achieved by an intermetallic nickel-aluminum base alloy which predominantly has the binary phase NiAl and additionally chromium and tantalum, wherein the total proportion of chromium and tantalum is a maximum of 12 at.%.
- the proportion of the binary phase NiAl is preferably between 70 to 95 at .-%, in particular between 85 and 90 at * t .-%.
- the preferred content ranges for tantalum and chromium are 0.3 to 3.8 at .-% and 1.0 to 9.0 at .-%. Within these ranges, 0.3 to 0.9 at.% Tantalum and 1.0 to 3 at.% Chromium or 1.7 to 3.0 at.% Tan tal and 6.0 to 9 are preferred .0 at .-% chromium used.
- the ratio of tantalum to chromium is preferably 1: 3 or less. With such a ratio, the concentration of substitution elements in the NiAl reaches a maximum.
- the ratio of tantalum and chromium precipitations occur in the coarse, mul- tular Laves phase in the non-metallic nickel-aluminum base alloy on the grain boundaries of the binary phase NiAl, on which the elements Ni, Al, Cr and Ta can be involved.
- there are excretions of finely divided Laves phase and ⁇ -chromium within the NiAl grains It is preferred that the structure of 5 to 11% by volume Laves phase, 3 to 10% by volume precipitates in NiAl and one
- a structure has proven to be particularly advantageous which comprises approximately 11 vol.% Laves phase on the grain boundaries and approximately 10 vol.% Precipitates in the NiAl and NiAl as the remainder.
- a further improvement in certain properties results if at least one element from the group iron, molybdenum, tungsten and hafnium is present in the alloy in an amount of up to 1 at.%, But not more than 3 at are included.
- the alloy can also contain trace elements such as oxygen, nitrogen and sulfur, as well as production-related impurities.
- the coarse or fine-particle multinary Laves phases and ⁇ -chromium are formed. These excretions are usually based on gussets points of different NiAl grains. Higher than the specified amounts of alloying elements tantalum or chromium can lead to an undesirable increase in the amount of precipitates. If the volume fractions of Laves phase increases too much, a cellular structure arises in which the Laves phase takes over the function of the matrix. Too large a proportion of Laves phase in the structure makes the intermetallic alloy brittle and difficult to process.
- the object aimed at using the alloy is achieved according to the invention in that components of a gas turbine, in particular components exposed to high temperatures, such as gas turbine blades, are produced with the NiAl base alloy.
- a component of a gas turbine, in particular a turbine blade, made from the base alloy is particularly suitable due to the high oxidation resistance for continuous use at high temperatures, for example above 1100 ° C., in particular at 1350 ° C.
- an additional coating with protective layers can be dispensed with in such a component, depending on the requirements.
- the intermetallic nickel-aluminum base alloy is generally also suitable as a material for the production of objects which must have high strength, high heat resistance, good toughness, good oxidation resistance and good thermal shock resistance.
- the strength lies here with a 0.2% proof stress at room temperature of over 600 MPa.
- the heat resistance lies at the 0.2% proof stress at over 200 MPa at 800 ° C and at over 90 MPa at 1000 ° C.
- the toughness is at least 7 MPa / m and the oxidation resistance is of the order of magnitude
- composition (in at.%) Of alloys sought is given in Table 1 below.
- the structure of the structure ie the grain size, the distribution of precipitates and the size of the precipitate, varies greatly with the manufacturing process.
- the distribution of the Laves phase particles is homogenized by thermodynamic treatments, extrusion (SP) or by using the powder metallurgical production route (PM).
- SP thermodynamic treatments
- PM powder metallurgical production route
- the mechanical properties of the alloys are also heavily dependent on the selected manufacturing process. The following production routes for these alloys were followed:
- Powder metallurgy by inert gas atomization and subsequent hot isostatic pressing at 1250 ° C.
- the creep resistance (in MPa) of the alloys tested in the compression test (secondary stationary creep resistance than Funk ⁇ tion of the strain rate [1 / s] at 1000 ° C and 1100 ° C *) is shown in Table 3 below.
- the creep strengths of this alloy are higher than the creep strengths of comparable intermetallic phases, for example higher than the creep strength of binary NiAl or NiAlCr alloys.
- Table 4a gives a comparison of the 0.2% proof stress (in MPa) in the compression test of a conventional superalloy, a binary NiAl alloy and a NiAl-Ta-Cr alloy.
- the superiority of the alloy according to the invention proves at temperatures above 1000 ° C.
- the NiAl-Ta-Cr alloy Compared to conventional superalloys, the NiAl-Ta-Cr alloy has the advantage that it also has sufficient strength above 1050 ° C to 1150 ° C. There is no sudden drop in strength in this alloy due to the dissolution of the solidified phase.
- Table 5 shows a comparison of the values of K ⁇ values of various ceramics known from industry data and of the powder-metallurgical processed NiAl-Ta-Cr alloy produced.
- the alloy has a good oxidation resistance of the order of magnitude 5 * 10- ⁇ g 2 c " ⁇ s, which is therefore equal to or better than the oxidation resistance of binary NiAl.
- no protective layers for example, are formed at high temperatures ceramic material, this eliminates the problem of the connection between ceramic and metallic components.
- Adequate thermal shock resistance is given. At 1350 ° C, 500 temperature cycles of the alloy are achieved without damaging the material.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4417936 | 1994-05-21 | ||
DE4417936A DE4417936C1 (de) | 1994-05-21 | 1994-05-21 | Nickel-Aluminium-Legierung |
PCT/EP1995/001921 WO1995032314A1 (de) | 1994-05-21 | 1995-05-19 | Intermetallische nickel-aluminium-basislegierung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0760869A1 true EP0760869A1 (de) | 1997-03-12 |
EP0760869B1 EP0760869B1 (de) | 2001-04-25 |
Family
ID=6518734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95920844A Expired - Lifetime EP0760869B1 (de) | 1994-05-21 | 1995-05-19 | Intermetallische nickel-aluminium-basislegierung |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0760869B1 (de) |
JP (1) | JPH10500453A (de) |
KR (1) | KR100359187B1 (de) |
CN (1) | CN1044493C (de) |
CZ (1) | CZ342696A3 (de) |
DE (2) | DE4417936C1 (de) |
RU (1) | RU2148671C1 (de) |
WO (1) | WO1995032314A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE521471C2 (sv) | 2001-03-27 | 2003-11-04 | Koncentra Holding Ab | Kolvring och beläggning på en kolvring innefattande ett kompositmaterial av en keram och en intermetallisk förening |
CN100422369C (zh) * | 2006-12-13 | 2008-10-01 | 北京航空航天大学 | Ti改性NiAl-Cr(Mo)多相共晶结构金属间化合物 |
BR102013019686B1 (pt) | 2013-08-01 | 2020-11-03 | Mahle Metal Leve S/A | anel de pistão e seu processo de fabricação |
CN104073688B (zh) * | 2014-06-19 | 2016-08-17 | 湖南科技大学 | 一种NiAl-2.5Ta-7.5Cr合金作为碱腐蚀工况下自润滑耐磨材料的应用 |
CN104294328B (zh) * | 2014-10-23 | 2017-02-01 | 上海应用技术学院 | 一种镍钼铝稀土镀层及其制备方法 |
DE102017109156A1 (de) | 2016-04-28 | 2017-11-02 | Hochschule Flensburg | Hochwarmfester Werkstoff und dessen Herstellung |
CN115595486B (zh) * | 2022-10-14 | 2024-03-22 | 中国科学院金属研究所 | 一种高温涡轮叶片叶尖耐磨切削涂层及其制备方法和应用 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1812144C3 (de) * | 1967-12-06 | 1974-04-18 | Cabot Corp., Boston, Mass. (V.St.A.) | Verfahren zur Herstellung eines hochfesten Nickel-Aluminium-WerkstofTs |
US5116691A (en) * | 1991-03-04 | 1992-05-26 | General Electric Company | Ductility microalloyed NiAl intermetallic compounds |
-
1994
- 1994-05-21 DE DE4417936A patent/DE4417936C1/de not_active Expired - Fee Related
-
1995
- 1995-05-19 WO PCT/EP1995/001921 patent/WO1995032314A1/de not_active Application Discontinuation
- 1995-05-19 EP EP95920844A patent/EP0760869B1/de not_active Expired - Lifetime
- 1995-05-19 RU RU96124081A patent/RU2148671C1/ru active
- 1995-05-19 JP JP7530056A patent/JPH10500453A/ja not_active Ceased
- 1995-05-19 CZ CZ963426A patent/CZ342696A3/cs unknown
- 1995-05-19 KR KR1019960706538A patent/KR100359187B1/ko not_active IP Right Cessation
- 1995-05-19 CN CN95193622A patent/CN1044493C/zh not_active Expired - Fee Related
- 1995-05-19 DE DE59509221T patent/DE59509221D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9532314A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH10500453A (ja) | 1998-01-13 |
CZ342696A3 (en) | 1997-08-13 |
CN1044493C (zh) | 1999-08-04 |
DE4417936C1 (de) | 1995-12-07 |
KR100359187B1 (ko) | 2003-01-24 |
KR970703438A (ko) | 1997-07-03 |
RU2148671C1 (ru) | 2000-05-10 |
DE59509221D1 (de) | 2001-05-31 |
EP0760869B1 (de) | 2001-04-25 |
WO1995032314A1 (de) | 1995-11-30 |
CN1150826A (zh) | 1997-05-28 |
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