Microstructure and elastic modulus evolution of TiTaNb alloys

T Y Wei; J C Huang; Chih-Yeh Chao; L L Wei; M T Tsai; Y H Chen

doi:10.1016/j.jmbbm.2018.06.047

Microstructure and elastic modulus evolution of TiTaNb alloys

J Mech Behav Biomed Mater. 2018 Oct:86:224-231. doi: 10.1016/j.jmbbm.2018.06.047. Epub 2018 Jun 28.

Authors

T Y Wei¹, J C Huang², Chih-Yeh Chao³, L L Wei⁴, M T Tsai¹, Y H Chen¹

Affiliations

¹ Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, Taiwan, ROC.
² Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, Taiwan, ROC; Institute for Advanced Study, Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong. Electronic address: jacobc@mail.nsysu.edu.tw.
³ Department of Mechanical Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan, ROC.
⁴ Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, ROC.

PMID: 29986297
DOI: 10.1016/j.jmbbm.2018.06.047

Abstract

In order to develop Ti based alloys with promising biocompatibility and matching mechanical response with human bone, TiTaNb alloys with 15, 23 and 30 mass% Ta are designed and systematically examined in terms of microstructural evolution and mechanical response. The Ti-30mass%Ta-10mass%Nb is demonstrated to be satisfactory with an elastic modulus ~60 GPa, hardness ~3.1 GPa, and strength ~1250 MPa. The evolution trend of the resulting microstructure and phases as a function of Ta content and annealing temperature are established. The relationship between the various phase amounts and alloy moduli is explored.

Keywords: Biocompatibility; Mechanical property; Microstructure; Ti alloy.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Alloys / chemistry*
Elastic Modulus*
Materials Testing
Niobium / chemistry*
Tantalum / chemistry*
Temperature
Titanium / chemistry*

Substances

Alloys
Niobium
Tantalum
Titanium