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

页码：170 / 173

页数：4

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