Prediction of recrystallized grain size during hot deformation of AZ31 magnesium alloy by monte carlo method

Abstract

Abstract Magnesium alloy is an important engineering metal material, which has a series of excellent mechanical, chemical and physical properties. It is widely used in aerospace, advanced manufacturing, biomedical and other fields. In the processing and preparation of magnesium alloy, high temperature and large deformation treatment are usually introduced. The introduction of temperature and strain rate will lead to grain coarsening and dynamic recrystallization. Therefore, it is necessary to study the effects of high temperature and deformation on the grain evolution of magnesium alloys. Based on the Monte Carlo simulation method, the microstructure evolution of AZ31 magnesium alloy at different temperatures and strain rates was simulated and analyzed. The results show that high temperature is the main reason for grain growth, and increasing strain rate can promote recrystallization and refine grain size.