A Study on Micromechanical Behaviors of Multi-phase steel during Uniaxial Loading
The stress-strain relationship between ferrite and martensite phases in the commercial dual-phase DP980 steel was studied by using in-situ neutron diffraction and the crystal plasticity finite element method (CPFEM).The phase identification method based on the image quality (IQ) of electron backscatter diffraction (EBSD) and a filtering process was used to obtain information concerning individual crystallographic orientations for ferrite and martensite phases in DP980 steel.The (200) and (211) lattice strains of ferrite and martensite phases were measured along the loading and transverse directions as a function of macroscopic stress using the in-situ neutron diffraction.A CPFEM based on representative volume elements (RVEs) was applied to determine the microscopic hardening parameters for each phase by fitting the measured macroscopic stress and measured (200) and (211) lattice strains.
Dual phase in-situ neutron diffraction Lattice strain EBSD CPFEM
J.S.Kim E.Y.Kim Y.H.Choi C.U.Jeong W.C.Woo S.-H.Choi
Department of Materials Science and Metallurgical Engineering,Sunchon National University,Sunchon,Je Neutron Science Division,Korea Atomic Energy Research Institute,Daejeon,305-600,South Korea
国际会议
Asia Steel International conference 2012(第五届亚洲钢铁大会)
北京
英文
1-3
2012-09-23（万方平台首次上网日期，不代表论文的发表时间）