JIANG Zhonghao
,
GUAN Zhenzhong
,
ZHANG ZuomeiChangchun Institute of Optics and Fine Mechanics
,
Chinese Academy of Sciences
,
Changchun
,
ChinaLIA N JiansheJilin University of Technology
,
Changchun
,
China
金属学报(英文版)
Bused on the deformation model of dual phase steels, an expression for the stress of martensite in dual phase steels is derived, it predictes that the onset of plastic deformation of martensite (transition strain) depends on the strain hardening of ferrite and on the strength of martensile. The relationship between the flow stress and microstructural parameters of a 0.12C-0.9Mn dual phase steel was investigated using the expression for the flow stress of dual phase steel[1] . By calculating the stress ratio and the stress-strain partition coefficient, the loud transition and the stress-strain partition between two phases are studied. It shows that the deformation of dual phase steel lies between the isostress and isostrain states and the stress-strain pratition changes continuously during the deloramtion.
关键词:
dual phase steel
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