Effect of Aging Temperature on Microstructure and Mechanical Properties of Ti-Nb-Ta-Zr-Fe Alloy for Biomedical Applications

摘要：

The effect of aging temperature on microstructure and mechanical properties of Ti-25Nb-10Ta-1Zr-0.2Fe alloy was investigated. The results showed that the solution treated sample possesses good plasticity behavior. The deformation mechanism of the solution treated sample during tensile process is stress induced martensite transformation from β phase to α phase. An increase in yield strength as well as a great decrease in plasticity is observed in the alloy after aging treatments owing to the precipitates forming barriers against dislocation slip. The precipitation of ω phase in β phase at relatively lower aging temperature between 150-400℃ leads to low strength-tomodulus ratio and low elongation, whereas the precipitation of α phase at relatively higher aging temperature of 550℃ results in high strength, low Youngs modulus and moderate elongation.

关键词： Microstructure mechanical property aging ω phase biomaterial

作者: Y. F. Xu D. Q. Yi H. Q. Liu B. Wang F. L. Yang

作者单位: School of Materials Science and Engineering,Central South University,Changsha,Hunan 410083,China Key School of Materials Science and Engineering,Central South University,Changsha,Hunan 410083,China Key School of Materials Science and Engineering,Central South University,Changsha,Hunan 410083,China Key

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 2126-2129

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）