Microstructure and properties of Ti-3Zr-2Sn-3Mo-25Nb alloy prepared by SPS method

被引：0
|
作者：
Ma X.-Q. [1 ]
Yu Z.-T. [1 ]
Liu H.-Y. [1 ]
Niu J.-L. [1 ]
Yu S. [1 ]
He X.-J. [1 ]
机构：
[1] Shaanxi Key Laboratory of Biomedical Metal Materials, Northwest Institute for Nonferrous Metal Research, Xi'an
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2019年 / 29卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Mechanical property; Medical β titanium alloy; Microstructure; Prealloyed powder; Spark plasma sintering;
D O I：
10.19476/j.ysxb.1004.0609.2019.01.09
中图分类号：
学科分类号：
摘要：
A biomedical β-Ti alloy Ti-25Nb-3Zr-3Mo-2Sn (mass fraction, %) was fabricated by spark plasma sintering (SPS). The characteristics, morphology and mechanical properties of TLM prealloyed powder after solid solution and aging were investigated. The results show that TLM prealloyed power prepared by plasma rotating electrode process has good spherical shape and high internal density. The solidification microstructure is consisted by small dendritic and single crystal. The sintered and as-soluted microstructures of TLM alloy propared by SPS method are equiaxed β phase and α″ martensite. The as-soluted alloy exhibits good comprehensive mechanical preperties with yield strength of 500 MPa, tensile strength of 624 MPa, elongation of 40% and elastic modulus of 54.5 GPa. Ageing at 500 ℃ for 6 h, after a superior the alloy has good plasticity, tensile strength reaches up to 1015 MPa, and the elastic modulus is 84 GPa. © 2019, Science Press. All right reserved.
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页码：74 / 80
页数：6
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