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- W2362238566 abstract "U71Mn rail steel belongs to high-carbon steel,and it's coarse grain heat affected zone is the weak part of welded joints.In this paper,by using welding thermal simulation technology,metaloscope,Vickers hardness tester,impact testing machine,and scanning electron microscope,microscopic constitution,micro hardness,impact ductility,and fracture morphology of coarse grain heat affected zone of U71Mn rail steel under different thermal circulation were researched.The results showed that the increase of t8/5 reduced the content of martensite in the microstructure,and the martensite disappeared when the t8/5 was longer than 100 s.Compared with single thermal cycle,the second thermal cycles can refined the grain size of CGHAZ,because the peak temperature of the second thermal cycle was 1 000 ℃,and improve hardness and toughness." @default.
- W2362238566 created "2016-06-24" @default.
- W2362238566 creator A5060681396 @default.
- W2362238566 date "2013-01-01" @default.
- W2362238566 modified "2023-09-24" @default.
- W2362238566 title "Influence of Welding Thermal Cycle on Structure and Properties in Grain-coarsening Region of U71Mn Rail Steel" @default.
- W2362238566 hasPublicationYear "2013" @default.
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