Grain growth in AZ31 Mg alloy during recrystallization at different temperatures by phase field simulation

摘要: Abstract In order to accomplish the quantitative simulation of realistic spatio-temporal microstructure evolution during recrystallization in industrial application scale micrometers and minutes, a model has been established using phase field method (PFM). All physical values parameters have determined by establishing set rules, some which are proposed first time. The simulated results good agreement with experimental observations AZ31 Mg alloy between temperatures 300–400 °C for up 100 min. implies mechanism variation activity energy grain boundary mobility at low such as 250 °C alloy. Analysis microstructures reveals that size fluctuation increases increasing temperature annealing It is found becomes particularly severe when over critical value 350 °C, agrees well existing data