Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 23, 2018 - November 25, 2018
High tensile steel, such as dual-phase steel consisting of ferrite and martensite, is still widely used in several industries. From a research and development point of view, it is important to clarify relationship between morphology or characteristics of each constituent phase and macroscopic mechanical properties. For the pursuit of such research, multiscale simulation is considered to be one of the effective tools. In this study, 3 dimensional microstructure of martensite phase inside a dual-phase steel sample was observed and visualized by serial sectioning method, and several microstructure RVE models based on the above observation were generated. Using these models, a multiscale FE simulation based on homogenization elasto-plasticity theory was conducted. From the above computational results, effect of internal microstructure, such as volume fraction and 3 dimensionality of high strength martensite phase, on macrosocpic tensile property of ferrite-martensite dual-phase steel was investigated.
