发明授权
US5302217A Cyclic heat treatment for controlling grain size of superalloy castings
失效
用于控制超合金铸件晶粒尺寸的循环热处理
- 专利标题： Cyclic heat treatment for controlling grain size of superalloy castings
- 专利标题（中）： 用于控制超合金铸件晶粒尺寸的循环热处理
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申请号： US995438申请日： 1992-12-23
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公开(公告)号： US5302217A公开(公告)日： 1994-04-12
- 发明人: William J. Gostic , Charles M. Biondo , Timothy P. Fuesting
- 申请人： William J. Gostic , Charles M. Biondo , Timothy P. Fuesting
- 申请人地址： CT Hartford
- 专利权人： United Technologies Corporation
- 当前专利权人： United Technologies Corporation
- 当前专利权人地址： CT Hartford
- 主分类号： C21D1/78
- IPC分类号： C21D1/78 ; C22F1/10
摘要：
Superalloy castings having large variations in section thickness are heat treated using a cyclic stress relief procedure, with the temperature being cycled between about 50.degree. F. (28.degree. C.) and 150.degree. F. (83.degree. C.) below the second phase particle solvus temperature, to relieve the residual stresses incurred during cooling within the mold following casting, followed by a solution cycle at a temperature about 25.degree. F. (14.degree. C.) below the second phase particle solvus temperature to dissolve some or all of the second phase particles.
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