发明名称 Nickel base superalloy columnar grain and equiaxed materials with improved performance in hydrogen and air
摘要 A nickel base superalloy, having either columnar or equiaxed grain structure, which has significantly improved resistance to hydrogen embrittlement, and to fatigue in air is disclosed. The superalloy consists essentially of, in weight percent, about 0.006-0.17 carbon, about 6.0-22.0 chromium, up to about 17.0 cobalt, up to about 9.0 molybdenum, up to about 12.5 tungsten, up to about 5.0 titanium, up to about 6.7 aluminum, up to about 4.5 tantalum, up to about 2.5 hafnium, up to about 18.5 iron, up to about 3.25 rhenium, up to about 1.25 columbium, remainder nickel. The microstructure of the superalloy consists essentially of a plurality of fine, discrete carbide particles, gamma ' precipitates in a gamma matrix, and is essentially free of script carbides, gamma / gamma ' eutectic islands and porosity.
申请公布号 US5820700(A) 申请公布日期 1998.10.13
申请号 US19950539091 申请日期 1995.10.04
申请人 UNITED TECHNOLOGIES CORPORATION 发明人 DELUCA, DANIEL P.;BIONDO, CHARLES M.
分类号 C22C19/05;C22F1/10;(IPC1-7):C22C19/05 主分类号 C22C19/05
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