Effects of cyclic thermo-hydrogen processing on microstructural and mechanical properties of Ti6Al4V alloy at room temperature

被引：9
|
作者：
Yuan, Baoguo [1 ]
Zhang, Xiaoxue [2 ]
Wang, Yujie [1 ]
Chen, Qiang [1 ,3 ]
Wan, Yuanyuan [3 ]
Zheng, Yubin [1 ]
Xing, Zhihui [3 ]
Zhan, Hong [3 ]
机构：
[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China
[2] Anhui Sanlian Univ, Sch Mech Engn, Hefei 230601, Anhui, Peoples R China
[3] Southwest Technol & Engn Res Inst, Chongqing 400039, Peoples R China
来源：
VACUUM | 2020年 / 171卷
基金：
中国国家自然科学基金;
关键词：
Titanium alloy; Cyclic thermo-hydrogen processing; Plasticity; Microstructure; DYNAMIC RECRYSTALLIZATION; COMPRESSIVE PROPERTIES; TITANIUM-ALLOY; DIFFUSION; SUPERPLASTICITY; BEHAVIOR; REFINEMENT; ABSORPTION; KINETICS; TI;
D O I：
10.1016/j.vacuum.2019.109015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Compression tests were performed at room temperature to investigate the effects of cyclic thermo-hydrogen processing (CTHP) on microstructural and mechanical properties of Ti6Al4V alloy. It was found that the amount of beta-phase in the microstructure of the alloy increased significantly under CTHP. Moreover, the ultimate compression of the alloy increased first and then started to decrease with the increasing number of CTHP cycles. The ultimate compression of the CTHP 2-treated Ti6Al4V alloy was improved by 22% as compared to Ti6Al4V alloy without hydrogen and reached 42%. Furthermore, with the increasing number of CTHP cycles, yield strength and yield ratio decreased first and then increased slightly; however, no conspicuous change in compressive strength was noticed.
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页数：7
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