Influence of Hydrogen on the Microstructures and Superplasticity of a Ti_3Al-Nb Alloy

查看全文 作　　者：Hua Ding, Bingzhe Bai, Dingliang Wang, Dan Song, Caipei Zhang, Jianzhong Cui,Luyi Yang (Northeastern University, Shellyang 110006, China;Tsinghua University, Beijing 100084, China;Beijing Research Institute of Mechanical and Electrical Technology, Be 出　　处：《Rare Metals》索引2001年第20卷第2期,共4页 基　　金：The projeccgt is financially supported by the National Natural Science Foundation.Oundation.] 摘　　要：The effect of hydrogen on the microstructures and superplasticity of a Ti3Al-Nb alloy was studied. The results showed that hydrogenation made the volume fraction of B2 phase increase and facilitated the dynamic recrystallization of the lath-like phase. The addition of hydrogen. reduced the flow stresses and made the maximum m value move to a lower temperature during the superplastic deformation. The superplastic deformation temperature of the alloy can be lowered by about 60℃. 关 键 词：Ti3Al-Nb alloy Thermohydrogen processing (THP), microstructure, superplasiticity