Effects of Fe and Nb content on microstructure and mechanical characteristics of biomedical Ti based alloys

被引：2
作者：
Guo, Q. H. [1 ]
Zhan, Y. Z. [1 ]
Zhang, X. J. [1 ]
Du, Y. [2 ]
Lin, M. N. [1 ]
Huang, Z. Z. [1 ]
Huang, G. R. [1 ]
机构：
[1] Guangxi Univ, Lab Nonferrous Met Mat & New Proc Technol, Minist Educ, Nanning 530004, Guangxi, Peoples R China
[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2010年 / 26卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Biomedical alloy; Ti alloy; Microstructure; Mechanical characteristics; YOUNGS MODULUS; TITANIUM-ALLOYS; PHASE-STABILITY; ELEMENTS; TI-29NB-13TA-4.6ZR; ZR; SN;
D O I：
10.1179/026708309X12495548508545
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructures and resulting mechanical properties of Ti-xNb-6Zr-7.5Sn-yFe (x=24, 30, 35 and y=1, 2, 2.5 wt-%) alloys were investigated for biomedical application. The microstructures were examined by means of optical microscopy, SEM and X-ray diffraction, and Vickers hardness, compressive elastic modulus and the yield strength have been measured. X-ray diffraction analysis showed that the alloys consist of beta+alpha or beta+alpha+alpha '' phases. The volume fraction of each phase changes with the variation of Fe and Nb contents according to consulting the relation between the contents of beta stabilising elements and phase composition of Ti alloys after quenching from beta phase region. The different microstructures result in various mechanical properties of the alloys. Ti-24Nb-6Zr-7.5Sn-2Fe has the higher strength/modulus ratio, i.e. the lower elastic modulus and the higher yield strength; hence, it is more suitable than the other alloys for biomedical applications.
引用
收藏
页码：1448 / 1452
页数：5
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