Metal treatment – Stock – Age or precipitation hardened or strengthened
Patent
1995-10-02
1998-03-10
Simmons, David A.
Metal treatment
Stock
Age or precipitation hardened or strengthened
148404, 60909, C22C 1905
Patent
active
057256926
ABSTRACT:
The present invention relates to a heat treated, gamma prime precipitation strengthened nickel base alloy having an improved resistance to hydrogen embrittlement, particularly crack propagation. The alloy has a microstructure which is essentially free of script carbides, gamma--gamma prime eutectic islands and porosity. The microstructure further includes a plurality of regularly occurring large barrier gamma prime precipitates and a continuous field of fine cuboidal gamma prime precipitates surrounding the large barrier gamma prime precipitates.
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Biondo Charles M.
DeLuca Daniel P.
Jones Howard B.
Rhemer Chris C.
Phipps Margery S.
Simmons David A.
United Technologies Corporation
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