HOT COMPRESSION BEHAVIOR OF ONE KIND OF META-STABLE β TITANIUM ALLOY
One kind of meta-stable β titanium alloy with grain sizes less than 1μm was developed using conventional plastic deformation process in Northwest Institute for Nonferrous Metal Research (NIN). The so called Ti-B19 alloy (Ti-Al-Mo-V-Cr-Zr) possesses excellent strength and toughness. In order to excavate the potential workability of the alloy, isothermal compression tests were carried out on the Gleeble-1500 thermal simulator at the temperature from 750℃ to 1000℃ and strain rate from 0.001 s-1 to 10s-1. The results indicate that the flow stresses of the alloy will be heavily influenced by the strain rates and deformation temperature. The flow stress decrease with the increase of deformation temperature, and increase with the increment of strain rates. A constitutive equation for the flow stress has been defined and the test conditions for a homogeneous deformation evaluated, and the material constants including activation energy Q, stress exponent n and constant In (A) were also obtained.
Hot compression activation energy Ti-B19 alloy constitutive equation
LIYING ZENG PENG GE XIAONAN MAO YONGQING ZHAO LIAN ZHOU
Northwest Institute for Nonferrous Metal Research, 96 Weiyang Road, Xian 710016, Peoples Republic of China
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
777-782
2008-09-03（万方平台首次上网日期，不代表论文的发表时间）