Study of martensitic transformation by use of Monte-Carlo method and molecular dynamics

Abstract

By use of the molecular dynamics based on a simple 8-4 Lennard-Jones type potential, we study how the stability of B2 against the martensite, in other words, how A S depends drastically on one of six parameters in the potential, i.e., the interactive distance parameter. Then, we study how the same parameter is related to T C order–disorder critical temperature in the same alloy by use of the Monte-Carlo method. By combining these studies, we show how the aging in the martensite, i.e. rubber-like behavior, depends on the relative position of A S with respect to T C.