Effect of Y₂O₃ on Mechanical Properties of Ti-29Nb-13Ta-4.6Zr for Biomedical Applications

Abstract:

Y2O3 was added to β-type Ti-29Nb-13Ta-4.6Zr (TNTZ) in order to achieve excellent mechanical performance and low Young’s modulus. TNTZ specimens with 0.05%–1.0% Y are all found to be composed of a β phase. Young’s moduli of TNTZ with 0.05–1.0% Y are all maintained low, and are almost the same as that of TNTZ without Y2O3. The grain size of TNTZ with 0.05%–1.0% Y is smaller than that of TNTZ without Y2O3. Moreover, Y2O3 precipitates can prevent the texture movement, and this effect becomes more obvious with an increase in the Y concentration. The tensile strength of TNTZ is successfully improved by adding Y2O3. TNTZ specimens with 0.2% and 1.0% Y exhibit good balance between the tensile strength and the elongation.

• Periodical: Materials Science Forum (Volumes 654-656)
• Pages: 2138-2141
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.654-656.2138
• Online since: June 2010
• Authors: Xiu Song, Mitsuo Niinomi, Harumi Tsutsumi, Toshikazu Akahori, Masaaki Nakai, Satoshi Yonezawa, Lei Wang
• Keywords: Rare Earth Oxide, Tensile Properties, Titanium Alloy, Young's Modulus

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