Study on the Microstructure and Properties of Ti40 Titanium Alloy by Thermo-hydrogenation Treatment
Thermo-hydrogenation treatment is a new technology to adjust the microstructure,mechanical properties and thermal processing of titanium alloy by adding hydrogen to the titanium alloys for its reversible chemical reaction. In this paper, the microstructure evolution and tensile properties at both room and high temperatures of β type Ti40 alloy with hydrogenation and dehydrogenation were studied The results show that the grain size of Ti40 had little variation,and only resulted in slight lattice distortion. At the same time,its strength remains nearly invariant,but the plasticity reduces largely at room temperature. While fracture analyses show that, with the increase of the content of hydrogen,fracture morphology has the features of ductile-brittle transition. And the thermal plasticity of Ti40 hardly changes through the hydrogen charge and dehydrogenation,unless dehydrogenation up to 0. 5wt％ H content, while the corresponding high-temperature strength has no reduction.
Ti40 titanium alloy Thermo-hydrogenation treatment microstructure refinement mechanical property, thermal processing plasticity
Zhang Pengsheng Mao Xiaonan Zeng Weidong Zhao Yongqing
Northwest Institute for Non-ferrous Metal Research,Xian Shaanxi 710016
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
1889-1893
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）