Elasto-plastic phase-field simulation of martensitic transformation in lath martensite steels

Abstract

Phase-field simulation of lath martensite formation in Fe–0.1C mass% steel was carried out based on the two types of slip deformation (TTSD) model, which is recently developed as a result of analytical solution for the martensitic transformation being composed of Bain deformation and plastic deformation but without lattice rotation matrix. The simulation results reveal that the plastic deformation along the two types of slip system is complementary. The simulation result of the relationship between the two types of slip deformation is consistent with the analytical result calculated by TTSD model, indicating the validity of TTSD model for explaining the formation of lath martensite.

Keywords:

• martensitic transformation
• steel
• dislocations
• phase-field method
• lath martensite

Acknowledgements

The authors would like to express their appreciation to JFE 21st Century Foundation for the financial support.