Decomposition of martensite α″ during aging treatments and resulting mechanical properties of Ti-Ta alloys

Ying Long Zhou, Mitsuo Niinomi, Toshikazu Akahori

研究成果: Article査読

127 被引用数 (Scopus)

抄録

Effects of Ta content and aging temperature on the decomposition of martensite α″ in the Ti-Ta alloys with Ta contents from 30 mass% to 50 mass% and the resulting mechanical properties, including the dynamic Young's modulus, were investigated for biomedical applications. The microstructures were examined using a scanning electron microscopy (SEM), a transmission electron microscopy (TEM) and an X-ray diffraction (XRD) analysis. The decomposition of martensite α″ phase in the Ti-Ta alloys depends on both Ta content and aging temperature. Various microstructures such as α, (β + ω) and (α + β) phases precipitate in the Ti-Ta alloys after the aging treatments are performed between 723 K and 873 K for 259.2 ks. The dynamic Young's modulus and mechanical properties of the Ti-Ta alloys are found to be sensitive to the microstructures caused by Ta content and aging temperature. The Ti-30% Ta alloy with α phase values much lower modulus and higher strength-to-modulus ratio than the currently used implant biomaterials, and thus has a great potential to become a new candidate alloy for biomedical applications.

本文言語English
ページ(範囲)92-101
ページ数10
ジャーナルMaterials Science and Engineering A
384
1-2
DOI
出版ステータスPublished - 2004 10月 25

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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