Superelastic response of low-modulus porous beta-type Ti-35Nb-2Ta-3Zr alloy fabricated by laser powder bed fusion

Noman Hafeez, Jia Liu, Liqiang Wang, Daixiu Wei, Yujin Tang, Weijie Lu, Lai Chang Zhang

    研究成果: Article査読

    43 被引用数 (Scopus)

    抄録

    This work investigated the superelastic response of the low-modulus porous β type Ti-35Nb-2Ta-3Zr scaffolds with different pore dimensions fabricated by laser powder bed fusion. The superelastic behavior was enhanced with increasing the pore size and stress-induced phase transformation, which correspondingly led to stress-induced α" [110]-type I twin martensitic transformation and ω formation adjacent to β matrix/twins. The resultant interstitial compound phase structure facilitated the β → α" and β → ω transition, which was triggered by interfacial stress/strain concentration and high-density dislocations. Substantial high-angle grain boundaries (HAGBs) accumulated high-intensity Schimd factor and crystallographic texture after being deformed. Moreover, a lower Young's modulus was obtained when the pore size and stress increased.

    本文言語English
    論文番号101264
    ジャーナルAdditive Manufacturing
    34
    DOI
    出版ステータスPublished - 2020 8月

    ASJC Scopus subject areas

    • 生体医工学
    • 材料科学(全般)
    • 工学(その他)
    • 産業および生産工学

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