发明名称 |
Heat treatment for improved properties of alpha-beta titanium-base alloys |
摘要 |
<p>An alpha-beta titanium-base alloy (20) is heat treated to improve its dwell fatigue properties while retaining a good balance of mechanical properties. The heat treatment includes first heating (22) the alpha-beta titanium-base alloy to a first heat-treatment temperature in a first range of from about 70 DEG F below a beta transus temperature of the alpha-beta titanium-base alloy to the beta transus temperature of the alpha-beta titanium-base alloy, and quenching (24) the alpha-beta titanium-base alloy at a rate of greater than about 200 DEG F per minute. The alpha-beta titanium-base alloy is second heated (26) to a second heat-treatment temperature in a second range of from about 100 DEG F to about 400 DEG F below the beta transus temperature of the alpha-beta titanium-base alloy, and thereafter the alpha-beta titanium-base alloy is cooled (28) to ambient temperature at a rate of from about 10 DEG F per minute to about 200 DEG F per minute. <IMAGE></p> |
申请公布号 |
EP1078997(A1) |
申请公布日期 |
2001.02.28 |
申请号 |
EP20000307195 |
申请日期 |
2000.08.22 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
GORMAN, MARK D.;WOODFIELD, ANDREW PHILIP;LINK, BARBARA A. |
分类号 |
C22F1/18;(IPC1-7):C22F1/18 |
主分类号 |
C22F1/18 |
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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