吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (05): 1320-1324.doi: 10.7964/jdxbgxb201305028

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Flow stress of medium carbon steel under warm compression deformation

LI Zhi-jie1,2, PENG Yan1,2, LIU Hong-min1,2, WANG Su-fen1, XIAO Li-zi1   

  1. 1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, China;
    2. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
  • Received:2012-04-06 Online:2013-09-01 Published:2013-09-01

Abstract:

In order to design the warm rolling process of medium carbon steel, flow stress under warm compression deformation was investigated by experiments. The experiments were carried out on a Gleeble-3500 thermal simulation machine at temperature of 550~700 ℃ with constant strain rates 0.001~1 s-1. The influence factors in warm deformation were studied. Results show that the stress-strain curve of medium carbon steel under warm deformation is composed of four stages: the ferrite dynamic recovery, ferrite dynamic recrystallization, cementite spheroidization, and steady deformation state. The main soften mechanisms are ferrite dynamic recrystallization and pearlite dynamic spheroidization.

Key words: metal material, medium carbon steel, warm deformation, flow-stress

CLC Number: 

  • TG142

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