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

• 作者: Baoguo Yuan Xing Liu Jiangfei Du Qiang Chen Yuanyuan Wan Yunliang Xiang Yan Tang Xiaoxue Zhang Zhongyue Huang
• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2021,（13）
• 页码范围: 132-143
• 页数: 12页
• 语种: 英文

摘要

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 ℃ 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.