Effect of Oxygen Addition on Isothermal Omega Phase Stability in Ti-29Nb-13Ta-4.6Zr

Masaaki Nakai; Mitsuo Niinomi; Toshikazu Akahori; Harumi Tsutsumi

doi:10.4028/www.scientific.net/MSF.654-656.2134

Paper Titles

Phase Constitution and Mechanical Properties of Ti-(Cr, Mn)-Sn Biomedical Alloys
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Phase Constituents of Ti-Cr-Au and Ti-Cr-Au-Zr Alloy Systems
p.2122

Effect of Nitrogen Addition on Mechanical Property of Ti-Cr-Sn Alloy
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Biomedical Titanium Alloy with Ultralow Elastic Modulus and High Strength
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Effect of Oxygen Addition on Isothermal Omega Phase Stability in Ti-29Nb-13Ta-4.6Zr
p.2134

Effect of Y₂O₃ on Mechanical Properties of Ti-29Nb-13Ta-4.6Zr for Biomedical Applications
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Improvement of Mechanical Performance and Biocompatibility of Spinal Implant Rod Made of Beta-Type Ti-Nb-Ta-Zr Alloy
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Microstructure Characterization of Laser Welded Near-β Titanium Alloy ‘TLM’ under Different Process Conditions
p.2146

Effect of Aging on Mechanical Properties of Ti-Mo-Al Biomedical Shape Memory Alloy
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HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Effect of Oxygen Addition on Isothermal Omega...

Effect of Oxygen Addition on Isothermal Omega Phase Stability in Ti-29Nb-13Ta-4.6Zr

Abstract:

A peculiar effect of oxygen on ω-phase stability, i.e., the enhancement of the isothermal ω-phase formation during aging due to oxygen addition was observed in the Ti-29Nb-13Ta-4.6Zr; this effect is contradictory to that reported conventionally. The effect was analyzed from the viewpoint of distribution of alloying elements. Oxygen and/or zirconium may dissolve in the ω phase during aging, resulting in the stabilization of the ω phase in this alloy.