板条马氏体拉伸塑性行为的原位分析

石增敏, 梁静宇, 李箭, 王毛球, 方子帆

In Situ Analysis of Plastic Deformation of Lath Martensite During Tensile Process

SHI Zengmin, LIANG Jingyu, LI Jian, WANG Maoqiu, FANG Zifan

图6 马氏体衍射峰的半峰宽(FWHM)及由卷积多重全曲线(CMWP)拟合的位错密度随应变的变化

Fig.6 Changes in full width at half maxima (FWHM) of martensite diffraction profiles obtained from Z-Rietveld fitting in the axial direction and the (200) peak profile before and after the tensile deformation (inset) (a), and dislocation densities obtained from convolutional multiple whole profile (CMWP) ?tting in the axial direction and the CMWP-calculated pattern (inset, measured profiles are presented in open circles and calculated profiles are presented in lines) (b) (γ—retained austenite, d—interplanar spacing, ε—true strain)