Hydrogen enhanced the room-temperature compressive properties of Ti44Al6Nb alloy

被引：15
|
作者：
Ma, T. F. [1 ]
Chen, R. R. [1 ]
Zheng, D. S. [1 ]
Guo, J. J. [1 ]
Ding, H. S. [1 ]
Su, Y. Q. [1 ]
Fu, H. Z. [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
来源：
MATERIALS LETTERS | 2018年 / 213卷
关键词：
Intermetallic alloys and compounds; Hydrogen; Microstructure; Compressive property; GAMMA-TITANIUM ALUMINIDE; HIGH-PRESSURE HYDROGEN; ELASTIC-MODULUS; TIAL ALLOY; DESIGN; MICROSTRUCTURES;
D O I：
10.1016/j.matlet.2017.11.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of hydrogen content on room temperature compressive properties of Ti44Al6Nb (at.%) alloy was studied. The results show that hydrogen promotes a solid solution strengthening in TiAl alloys, the microhardness increases with increasing of hydrogen content, which is increased by 40% after hydrogenation with 1.22 at.% H. As hydrogen content increases, the ultimate compressive strength and fracture strain increases firstly and then decreases. The Ti44Al6Nb alloy exhibits higher compressive strength and plasticity after addition of 0.42 at.% H, which is enhanced by 10% and 31% respectively. The distinct effect of hydrogen on the mechanical properties of TiAl alloys is attributed to the hydrogen-promoted dislocation motion and hydrogen-induced solution strengthening. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：170 / 173
页数：4
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