Effect of strain rates on tensile properties of TiAl alloy at elevated temperatures
Effect of temperature and strain rates on tensile properties of TiAl alloy were investigated in this paper. 500℃, 650℃ and 800℃ were chosen to evaluate the effect of temperature and strain rates on tensile properties at the strain rate of 3.47×10-4 s-1, different strain rates such as 3.47xl0-4 s-1, 1.74x10-4 s-1 and 3.47xl0-3 s-1 were used to compare the effect of strain rates on tensile properties at 650℃. The results show that tensile strength decreased little till 650℃; descended rapidly above 650X2 while ductility enhanced largely with temperature increasing; Yield strength continuously declined while temperature rose; Strain rates had a complicated effect on tensile properties of TiAl alloy; The ductility of TiAl alloy about 650℃ was mainly affected by its intrinsic atomic characteristic and its microstructure; Flow stress rely on phase interface, grain boundary, microstructure, deformation temperature and strain rate, phase structure and dynamic recrystallization.
component titanium aluminum alloy tensile properties strain rate elevated temperature
Hongfu Xiang Anlun Dai Hui Li Zhiyuan Zhu Jinghai Tao
Provincial Key Lab of Advanced Welding TechnologyJiangsu University of Science and Technology Zhenji Electric Power Line Accessories Quality Inspection Center of Electric Industry Nanjing 210037, China
国际会议
三峡
英文
2331-2334
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）