RESEARCH OF MACRO- AND MICROMECHANICS OF STEEL DEFORMATION DURING DRAWING BY MULTISCALE COMPUTER SIMULATION

Abstract

The article compares the results of modelling allowing for the TRIP effect and overlooking it. The comparison shows that martensite, which forms in the microstructure, causes a significant rise of equivalent stresses across the entire representative volume, which is extremely critical in the drawing process engineering. The method applied also gave a better understanding of how the microstructural elements interact in TRIP steel under strain, which helped explain more intense (2 or 3 times as high compared with the average values) radial strains in the plastic phases close to bigger grain clusters of stronger bainite and martensite phases.