Microstructure and elastic modulus evolution of TiTaNb alloys. (October 2018)

• Record Type: Journal Article
• Authors: Wei, T.Y.; Huang, J.C.; Chao, Chih-Yeh; Wei, L.L.; Tsai, M.T.; Chen, Y.H.
• Is Part Of: Journal of the mechanical behavior of biomedical materials. Volume 86(2018)
• Page Start: 224
• Page End: 231
• Publication Date: 2018-10
• Subjects: Ti alloy -- Mechanical property -- Microstructure -- Biocompatibility; Biomedical materials -- Periodicals; Biomedical materials -- Mechanical properties -- Periodicals; Biomedical materials; Biomedical materials -- Mechanical properties; Periodicals; Electronic journals; 610.28
• DOI: 10.1016/j.jmbbm.2018.06.047
• Languages: English
• ISSNs: 1751-6161

Abstract

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. Graphical abstract: fx1 Highlights: The TiTaNb alloys with 15, 23 and 30 mass% Ta have been developed and characterized. Ti30Ta10Nb possesses the best combination of modulus and strength of 60 GPa and 1250 MPa. The mechanical properties of Ti30Ta10Nb match perfectly with those of human bone.