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Effect of Oxygen Content on Aging Properties of Ti-39Nb-6Zr alloy

Ti-39Nb-6Zr 합금의 산소함량에 따른 시효특성 변화

  • Han, Chan Byeol (Department of Materials Science and Metallurgical Engineering, Sunchon National University) ;
  • Lee, Dong-Geun (Department of Materials Science and Metallurgical Engineering, Sunchon National University)
  • 한찬별 (순천대학교 신소재공학과) ;
  • 이동근 (순천대학교 신소재공학과)
  • Received : 2022.03.17
  • Accepted : 2022.03.24
  • Published : 2022.03.30

Abstract

Titanium alloy for bio-medical applications have been developed to reduce the toxicity of alloying elements and avoid the stress-shielding effect which is caused by relatively high elastic modulus compared to bone. Ti-39Nb-6Zr (TNZ40) alloy of elastic modulus exhibits around 40 GPa in the case of beta single phase. However, the strength of this alloy is lower than the other types of titanium alloys. Many research found that adding oxygen to beta-titanium alloys is beneficial for improving the strength through solid solution strengthening. In this study, TNZ40 ingots with addition of O were prepared by an arc remelting process (Ti-39Nb-6Zr-0.16O (wt.%), Ti-39Nb-6Zr-0.26O (wt.%)). Thermo-mechanical processing (i.e., heat treatment, cold swaging and aging heat treatment) has been performed under various conditions. Therefore, the aim of this study is to investigate the effect of oxygen content and ω phase formation on microstructure and mechanical properties.

Keywords

Acknowledgement

본 연구는 순천대학교 교연비 사업의 연구지원으로 수행되었으며, 이에 감사드립니다.

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