发明名称 |
NICKEL BASE SUPERALLOY COMPOSITIONS BEING SUBSTANTIALLY FREE OF RHENIUM AND SUPERALLOY ARTICLES |
摘要 |
<p>A nickel base superalloy composition substantially free of rhenium includes, in percentages by weight: about 5-8 Cr; about 7-8 Co; about 1.3-2.2 Mo; about 4.75-6.75 W; about 6.0-7.0 Ta; if present, up to about 0.5 Ti; about 6.0-6.4 Al; about 0.15-0.6 Hf; if present, from about 0.03-0.06 C; if present, up to about 0.004 B; if present, one or more rare earths selected from Y, La, and Ce up to about 0.03 total, the balance including nickel and incidental impurities. The superalloy composition is able to provide sustained-peak low cycle fatigue and/or oxidation resistance properties comparable to second generation superalloy compositions including at least about 3 wt% rhenium. Superalloy articles incorporating the compositions include nozzles, shrouds, and splash plates for gas turbine engines.</p> |
申请公布号 |
WO2009032579(A1) |
申请公布日期 |
2009.03.12 |
申请号 |
WO2008US74171 |
申请日期 |
2008.08.25 |
申请人 |
GENERAL ELECTRIC COMPANY;O'HARA, KEVIN, SWAYNE;CARROLL, LAURA, JILL |
发明人 |
O'HARA, KEVIN, SWAYNE;CARROLL, LAURA, JILL |
分类号 |
C22C19/05;C30B29/52 |
主分类号 |
C22C19/05 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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