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Nickel base superalloy articles with improved resistance to crack propagation
Nickel base superalloy articles with improved resistance to crack propagation
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机译:具有改善的抗裂纹扩展能力的镍基高温合金制品
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摘要
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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