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. &lt;IMAGE&gt;</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
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