In-situ synchrotron X-ray diffraction study of stress-induced phase transformation in Ti50.1Ni40.8Cu9.1 thin films

Hong Wang, Guangai Sun, Bo Chen, Yong Qing Fu, Xiaolin Wang, Xiao-Tao Zu, Hua Hai Shen, Yanping Liu, Liangbin Li, Guoqiang Pan, Liusi Sheng, Q. Tian

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    Stress-induced martensitic transformation of as-sputtered and post-annealed Ti50.1Ni40.8Cu9.1 thin films was investigated using in-situ synchrotron X-ray diffraction (S-XRD) technique. For the as-deposited film, in-situ S-XRD analysis showed a martensitic transformation from parent phase to martensite during initial loading, followed by reorientation of martensite variants via detwinning. This detwinning process induced a strong 〈0 2 0〉 fiber texture along the loading direction and a strong 〈0 0 2〉 fiber texture perpendicular to the loading direction. For the 650 °C annealed film, there is only elastic deformation, followed by a martensitic transformation during deformation.
    Original languageEnglish
    Pages (from-to)3437-3440
    JournalPhysica B: Condensed Matter
    Volume407
    Issue number17
    DOIs
    Publication statusPublished - Sept 2012

    Keywords

    • Shape memory
    • Ti–Ni–Cu thin film
    • stress-induced phase transformation
    • detwinning
    • synchrotron X-ray diffraction

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