Microstructure evolution and its effect on the stress rupture behavior of 9%Cr-CrMoV dissimilar welded joint

Kai Ding,Manjie Fan,Yi He,Xin Huo,Xia Liu,Tao Wei,Guanzhi Wu,Yulai Gao

Engineering Failure Analysis（2023）

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摘要

•The creep rupture in the CrMoV-BM was mainly controlled by plastic deformation.•The dependence of rupture time on stress was achieved to predict the life.•Coarsened carbides and the formation of the M6C phase initiated the cracks.

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关键词

Stress rupture behavior,Fracture location,Mo-rich M6C carbide,Soft zone,Failure mechanism

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