Influence of oxygen content on microstructure and mechanical properties of Ti-Nb-Ta-Zr alloy

被引：136

作者：

Wei, Qianqian ^{[1
]}

Wang, Liqiang ^{[1
]}

Fu, Yuanfei ^{[2
]}

Qin, Jining ^{[1
]}

Lu, Weijie ^{[1
]}

Zhang, Di ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Med, Peoples Hosp 9, Shanghai 200011, Peoples R China

来源：

MATERIALS & DESIGN | 2011年 / 32卷 / 05期

关键词：

Beta titanium alloy; Microstructure; Mechanical properties; SUPERELASTICITY;

D O I：

10.1016/j.matdes.2010.11.049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of oxygen content on microstructure and mechanical properties of Ti-22.5Nb-0.7Ta-2Zr (at.%) alloy was investigated in this work. According to experiments, the grains were refined apparently when the oxygen content was between 1.5% and 2.0%. The ultimate tensile strength CUTS) increased and elongation decreased with increasing oxygen content. But at the content of 1.0%, the elongation was nearly the same to that of the original alloy (about 16%). The elastic modulus remained comparatively low (< 65 GPa) when the content was lower than 1.5%, and then increased dramatically. Therefore, there existed the best oxygen content-1.0%, at which fine grains were obtained, as well as UTS of 750 MPa, elongation of 16% and elastic modulus of 65 GPa. The Ti-22.5Nb-0.7Ta-2Zr-1.0O alloy maintained typical ductile fracture characteristics of beta titanium alloy, and had a little superelasticity. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2934 / 2939

页数：6

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