Heat Treatment Process on Low Carbon Si-Mn TRIP Steel

HUA Jianfeng; CHEN Xiao; JIANG Li

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Heat Treatment Process on Low Carbon Si-Mn TRIP Steel

HUA Jianfeng 1 #,CHEN Xiao 2,JIANG Li 3 *

1.School of Material Science and Engineering，China University of Mining and Technology, JiangSu XuZhou 221116

2.School of Material Science and Engineering ,China University of Ming and Technology Xuzhou 221116

3.School of Material Science and Engineering，China University of Mining and Technology,Xuzhou 221116

*Correspondence author

#Submitted by

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Funding: none

Opened online:30 May 2012

Accepted by: none

Citation: HUA Jianfeng,CHEN Xiao,JIANG Li.Heat Treatment Process on Low Carbon Si-Mn TRIP Steel[OL]. [30 May 2012] http://en.paper.edu.cn/en_releasepaper/content/4479427

The mechanical properties of low carbon Si-Mn TRIP steel for heat treatment process were studied by XRD、impact test and tensile test. The results showed that 27SiMn steel could obtain three-phase organization of ferrite, bainite and retained austenite after heating at 790℃, holding insulation for 50min and then being isothermal quenching at 380℃ for 20min. The comprehensive mechanical properties were 27225MPa×% and the tensile strength and the elongation were 825MPa and 33% respectively by means of this heat treatment technology. But meanwhile it could receive that the impact toughness was 47J/cm2 and the hardness was 217HB. the retained austenite content was 15.76%, when gained the above excellent qualities. Under this heat treatment process, it contributed to TRIP effect obviously.

Keywords:Low carbon Si-Mn; Heat treatment process; Isothermal quenching; Mechanical Property; TRIP

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