A STUDY OF DYNAMIC RECRYSTALLIZATION IN TA15 TITANIUM ALLOY DURING HOT DEFORMATION BY CELLULAR AUTOMATA MODEL
The dynamic recrystallization (DRX) of TA15 (Ti-6Al-2Zr-1Mo-1V) titanium alloy during the hot deformation process was studied by the Cellular Automata (CA) model which is base on the dislocation density theory. To build the CA model, the dislocation density model, dynamic recovery model, nucleation model and grain growth model were introduced and developed. The influences of strain rate on the microstructure evolution and flow stress character were investigated which shows that high strain rate leads to later DRX appearance, high flow stress peak value, small mean size of recrystallizing grains(R-grains) and low DRX percentage, but they have the similar Avrami curve. The characteristic of DRX process in a modeling non-uniform temperature filed (NTF) has been studied. All the simulation results show good agreement with the pioneers work and experimental results.
Dynamic recrystallization TA15 titanium alloy hot deformation cellular automata
DONG HE JING CHUAN ZHU YANG WANG YONG LIU
School of Materials Science and Engineering, Harbin Institute of Technology, 92, West Dazhi St.Harbi School of Materials Science and Engineering, Harbin Institute of Technology, 92, West Dazhi St, Harb
国际会议
第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)
哈尔滨
英文
934-939
2008-09-03（万方平台首次上网日期，不代表论文的发表时间）