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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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熔体过热处理对M963合金组织和高温持久性能的影响
, PP. 75-78
Keywords: 镍基高温合金,溶体过热,显微组织
Abstract:
对M963合金熔体进行了过热处理并在1248K/225MPa条件下测试了其持久性能.结果表明随熔体过热温度的升高.铸态组织中的初生MC碳化的不断细化和均匀分布,合金的持久断裂寿命和塑性明显提高;但温度高达2023K的熔体过热处理,使合金中的气体含量升高,导致显微疏松增加,持久性能降低.在1923K温度下进行熔体过热处理,可使M963合金在1248K/225MPa条件下的持久寿命和持久塑性同时提高一倍以上.
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