J. Mater. Sci. Technol. ›› 2021, Vol. 72: 132-143.DOI: 10.1016/j.jmst.2020.09.013

• Research Article • Previous Articles     Next Articles

Effects of hydrogenation temperature on room-temperature compressive properties of CMHT-treated Ti6Al4V alloy

Baoguo Yuana, Xing Liub, Jiangfei Dua, Qiang Chena,c,*(), Yuanyuan Wanc, Yunliang Xiangc, Yan Tangc, Xiaoxue Zhangd, Zhongyue Huanga   

  1. a School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, PR China
    b Beijing Aerospace New Trend Machinery and Equipment Co., Ltd., Beijing 100039, PR China
    c Southwest Technology and Engineering Research Institute, Chongqing 400039, PR China
    d School of Mechanical Engineering, Anhui Sanlian University, Hefei 230601, PR China
  • Received:2020-07-13 Revised:2020-09-12 Accepted:2020-09-14 Published:2021-05-10 Online:2021-05-10
  • Contact: Qiang Chen
  • About author:* School of Materials Science and Engineering, HefeiUniversity of Technology, Hefei 230009, PR China. E-mail addresses: 2009chenqiang@hfut.edu.cn, 2009chenqiang@163.com (Q. Chen).

Abstract:

Compression tests were performed at room temperature to investigate the effects of hydrogenation temperature on compressive properties of Ti6Al4V alloy treated by continuous multistep hydrogenation treatment (CMHT). Pressure-composition isotherms and microstructures were also studied. Results showed that the equilibrium hydrogen pressure increased, and the hydrogen absorption rate decreased with the increase of hydrogenation temperature. The amounts of β phase and α” martensite increased first and then decreased when Ti6Al4V alloy was treated by four times CMHT with the increase of hydrogenation temperature. Hydrogenation temperature played a different role on the compressive properties of CMHT-treated Ti6Al4V alloy. The ultimate compression of Ti6Al4V alloy treated by 11 times CMHT at 850 °C increased by 83.3 % as compared to the as-received Ti6Al4V alloy. The compressive properties of Ti6Al4V alloy were dependent on the amounts of different phases and microstructures when Ti6Al4V alloy was treated by CMHT at different temperatures.

Key words: Titanium alloy, Continuous multistep hydrogenation treatment, Hydrogenation temperature, Plasticity