发明名称 |
Method of controlling grain size in forged precipitation-strengthened alloys and components formed thereby |
摘要 |
Components and methods of processing such components from precipitation-strengthened alloys so that the components exhibit desirable grain sizes following a supersolvus heat treatment. The method includes consolidating a powder of the alloy to form a billet having an average grain size. The billet is then forged at a temperature below the solvus temperature to form a forging (10) having an average grain size of not coarser than the grain size of the billet. The billet is then forged at a total strain of at least 5%, after which at least a portion (14) of the forging (10) is heat treated at a temperature below the solvus temperature to pin grains within the portion (14). The entire forging (10) can then be heat treated at a temperature above the solvus temperature of the alloy without coarsening the grains in the portion (14). |
申请公布号 |
EP2520679(B1) |
申请公布日期 |
2015.07.22 |
申请号 |
EP20120166874 |
申请日期 |
2012.05.04 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
GOLLER, GEORGE;STONITSCH, RAYMOND JOSEPH;DIDOMIZIO, RICHARD |
分类号 |
B22F3/17;B21J1/06;B21K1/32;C22C19/05;C22F1/10 |
主分类号 |
B22F3/17 |
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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