Microstructural degradation and its corresponding mechanical property of wrought superalloy GH4037 caused by very high temperature
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- 作者：J.Y. Tonga ; K. Yagib ; Y.R. Zhenga ; Q. Fenga ; qfeng@skl.ustb.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Wrought superalloy ; Blade ; Overheating ; Microstructure ; Mechanical properties
- 刊名：Journal of Alloys and Compounds
- 出版年：2017
- 出版时间：5 January 2017
- 年：2017
- 卷：690
- 期：Complete
- 页码：542-552
- 全文大小：4872 K
文摘
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Overheating microstructural degradation in GH4037 alloy was quantitatively studied.
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Dissolution of γ′ precipitates reduced high-temperature tensile strength grossly.
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Dissolved γ′ and GB carbides re-precipitated again at 850 °C instantly.
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No dramatic decrease in creep life of overheated alloy occurred at 850 °C/196 MPa.
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Microstructure degradation decreased creep properties at 700 °C/471 MPa greatly.