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Study on Stress Relaxation Behaviour of GH4145 Alloy
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School of Materials Science and Engineering,School of Materials Science and Engineering,North China Electric Power Research Institute Co Ltd,North China Electric Power Research Institute Co Ltd,North China Electric Power Research Institute Co Ltd,North China Electric Power Research Institute Co Ltd,North China Electric Power Research Institute Co Ltd

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    Abstract:

    Stress relaxation behaviour of GH4145 alloy at 566 oC was investigated. The results showed that the alloy has good resistance to stress relaxation. During the stress relaxation test, although the average grain size of the alloy obviously increases, the coarsening rate of secondary γ′ phase is very slow. The increase of the volume fraction of cuboidal secondary γ′ particles with larger size and the precipitation of spherical tertiary γ′ particles with smaller size make the hardness of the alloy increase.

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[Zeng Yanping, Yao Dazhi, Cai Wenhe, Wang Zhichun, Dong Shuqing, Li Weili, Zhao Weidong. Study on Stress Relaxation Behaviour of GH4145 Alloy[J]. Rare Metal Materials and Engineering,2017,46(11):3316~3320.]
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History
  • Received:August 01,2015
  • Revised:October 22,2015
  • Adopted:November 18,2015
  • Online: December 13,2017

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