发明名称 |
Heat treatment of nickel-base superalloy die inserts |
摘要 |
<p>A rigid die insert for forming and shaping a working material comprises a nickel-base superalloy, preferably Rene 95. A plurality of gamma prime particles are uniformly distributed throughout the rigid die insert, which has a Rockwell hardness Rc of between about 48 and about 52. The invention also includes a method of treating a rigid die insert comprising a nickel-base superalloy to reduce crack propagation and raise yield stress. The method comprises the steps of: providing the rigid die insert; dissolving larger gamma-prime particles in the rigid die insert; and growing additional gamma-prime particles of smaller particle size in the rigid die insert, whereby the particle size of each of the plurality of gamma-prime particles is refined, thereby reducing crack propagation and raising the yield stress of the rigid die insert. A method of refining the particle size of gamma-prime particles in a Rene 95 superalloy is also disclosed.</p> |
申请公布号 |
EP1176222(A2) |
申请公布日期 |
2002.01.30 |
申请号 |
EP20010305605 |
申请日期 |
2001.06.27 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
ROWE, RAYMOND GRANT;MIKA, DAVID PETER;MAJORELL, ARNE RONALD |
分类号 |
B21C3/02;C22F1/10;(IPC1-7):C22F1/10 |
主分类号 |
B21C3/02 |
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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