Effect of Aging Treatment on Microstructure and Mechanical Properties of Ti27Nb2Ta3Zr β Titanium Alloy for Implant Applications

被引：8
作者：
Wang, Liqiang [1 ]
Lin, Zhengjie [1 ]
Wang, Xueting [1 ]
Shi, Qiwei [1 ]
Yin, Weiqing [1 ]
Zhang, Di [1 ]
Liu, Zhongtang [2 ]
Lu, Weijie [1 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Shanghai Peoples Hosp 6, Dept Orthopaed, Shanghai 200240, Peoples R China
来源：
MATERIALS TRANSACTIONS | 2014年 / 55卷 / 01期
基金：
美国国家科学基金会;
关键词：
beta titanium alloy; aging; microstructure; mechanical properties; TI-NB ALLOYS; PHASE-TRANSFORMATIONS; HEAT-TREATMENT; MODULUS; TA;
D O I：
10.2320/matertrans.M2013187
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This work aims to clarify the influence of aging temperature and time on the microstructure and mechanical properties of the Ti-Nb alloy for biomedical applications. The ingot of Ti-27Nb-2Ta-3Zr alloy was subjected to the arc melting, hot-forging and heat treatment respectively. Microstructure characterization was investigated by optical microscope (OM), X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). The tensile tests showed an upward trend of the volume fraction of omega phase and alpha phase with the increase of aging time. When the aging temperature was higher than 673 K, the amount of ellipsoid-shaped omega phase precipitation decreased and needle-like alpha phase appeared, which contributed to higher tensile strength, lower Young's modulus and better plasticity.
引用
收藏
页码：141 / 146
页数：6
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