Modeling of Grain Growth for Dynamic Recrystallization of TA15 Titanium Alloy

作者：Ouyang Delai^*; Lu Shiqiang; Cui Xia; Wu Chao; Li Xin

来源：Rare Metal Materials and Engineering, 2010, 39(7): 1162-1165.

• driving forces
• grain growth model
• TA15 titanium alloy

Driving forces of grain growth during dynamic recrystallization of TA15 titanium alloy were analyzed theoretically and the equivalent negative driving forces concept for dynamic recrystallization grain growth was also proposed. Based on driving forces of dynamic recrystallization grain growth, a grain growth rate model and a grain size model describing grain size evolution of TA15 titanium alloy during dynamic recrystallization were established. Taking the experimental data of dynamic recrystallization grain size of TA 15 titanium alloy as an example, the size model parameters were optimized by genetic algorithm (GA). The calculated results of grains size were in good agreement with the experimental values, whose average error was 7.4%

• 出版日期2010-5
• 单位南昌航空大学; 南京航空航天大学