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Temperature dependence of L��ders strain and its correlation with martensitic transformation in a medium Mn transformation-induced plasticity steel |
Xiao-gang Wang1,Ming-xin Huang2,* |
1 State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, Hunan, China 2 Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China |
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Abstract The L��ders deformation behavior in a medium Mn transformation-induced plasticity (TRIP) steel is investigated at different temperatures ranging from 25 to 300��C. It demonstrates that the L��ders band appears at all testing temperatures but with varied L��ders strains which do not change monotonically with temperature. The martensitic transformation is simultaneously observed within the L��ders band in varying degrees depending on the testing temperature. It is well verified that the martensitic transformation is not responsible for the formation of L��ders band, and a reasonable explanation is given for the non-monotonic variation of L��ders strain with increasing temperature.
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Received: 12 June 2017
Published: 01 December 2017
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