| (19) |
 |
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(11) |
EP 1 262 569 A8 |
| (12) |
CORRECTED EUROPEAN PATENT APPLICATION |
| (48) |
Corrigendum issued on: |
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21.05.2003 Bulletin 2003/21 |
| (43) |
Date of publication: |
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04.12.2002 Bulletin 2002/49 |
| (22) |
Date of filing: 29.05.2002 |
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| (51) |
International Patent Classification (IPC)7: C22C 19/00 |
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| (84) |
Designated Contracting States: |
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AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
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Designated Extension States: |
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AL LT LV MK RO SI |
| (30) |
Priority: |
30.05.2001 JP 2001161919
17.05.2002 JP 2002143572
|
| (71) |
Applicants: |
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- Ishikawajima-Harima Heavy Industries Co., Ltd.
Chiyoda-ku, Tokyo (JP)
- National Institute for Materials Science
Tsukuba-shi, Ibaraki (JP)
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| (72) |
Inventors: |
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- Koizumi, Yutaka c/o Nat.Inst. f. Materials Science
Tsukuba-shi Ibaraki-Ken (JP)
- Kobayashi, Toshiharu c/o Nat.Inst. f. Mat. Science
Tsukuba-shi Ibaraki-Ken (JP)
- Yokokawa, Tadaharu c/o Nat.Inst. f. Mat. Science
Tsukuba-shi Ibaraki-Ken (JP)
- Harada, Hiroshi c/o Nat.Inst. f. Material Science
Tsukuba-shi Ibaraki-Ken (JP)
- Aoki, Yasuhiro Ishikawajima-Harima Heavy I. Co.Ltd
Nishitokyo-shi, Tokyo (JP)
- Arai, Mikiya, Ishikawajima-Harima Heavy Ind.Co.Ltd
Nishitokyo-shi, Tokyo (JP)
- Masaki, Shoju Ishikawajima-Harima Heavy Ind.Co.Ltd
Nishitokyo-shi, Tokyo (JP)
- Kakiuchi,Ryoji Ishikawajima-Harima HeavyInd.Co.Ltd
Nishitokyo-shi, Tokyo (JP)
- Chikugo,Kazuyoshi Ishikawajima-HarimaHeavyI.Co.Ltd
Koto-Ku, Tokyo (JP)
|
| (74) |
Representative: Lamb, Martin John Carstairs |
|
MARKS & CLERK, 57-60 Lincoln's Inn Fields
London WC2A 3LS
London WC2A 3LS (GB) |
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| (54) |
Ni-based single crystal super alloy |
(57) The object of the present invention is to provide an Ni-based single crystal super
alloy capable of improving strength by preventing precipitation of a TCP phase at
high temperatures. This object is achieved by an Ni-based single crystal super alloy
having a composition consisting of 5.0-7.0 wi% Al, 4.0-8.0 wt% Ta, 2.9-4.5 wt% Mo,
4.0-8.0 wt% W, 3.0-6.0 wt% Re, 0.01-0.50 wt% Hf, 2.0-5.0 wt% Cr, 0.1-15.0 wt% Co and
1.0-4.0 wt% Ru in terms of its weight ratio, with the remainder consisting of Ni and
unavoidable impurities.