Functional Properties of Nanostructured Ti-50.0 at % Ni Alloys

    Volume 3, Issue 6 (June 2006)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 5 April 2006

    Page Count: 11


    Demers, V
    Ph.D. Student, Professor, and Ms. Eng. Student, Ecole de Technologie Superieure, Montreal, Quebec

    Brailovski, V
    Ph.D. Student, Professor, and Ms. Eng. Student, Ecole de Technologie Superieure, Montreal, Quebec

    Prokoshkin, S
    Professor, Ph.D. Student, and Researcher, Moscow State Institute of Steel and Alloys, Moscow,

    Inaekyan, K
    Professor, Ph.D. Student, and Researcher, Moscow State Institute of Steel and Alloys, Moscow,

    Bastarash, E
    Ph.D. Student, Professor, and Ms. Eng. Student, Ecole de Technologie Superieure, Montreal, Quebec

    Khmelevskaya, I
    Professor, Ph.D. Student, and Researcher, Moscow State Institute of Steel and Alloys, Moscow,

    Dobatkin, S
    Professor, Baikov Institute of Metallurgy and Material Science of RAS, Moscow,

    (Received 2 February 2006; accepted 20 March 2006)

    Abstract

    Ti-50 at % Ni alloy wire is subjected to cold-rolling (true strain e=0.3-1.9) and post-deformation annealing (200–700°C range). For all levels of cold work, the maxima of recovery strain and stress are obtained after annealing in the 350–400°C range. For the moderately-to-high cold-worked material (e=0.3-0.88), this annealing leads to polygonization, while for the severely cold-worked one (e=1.9), to the material nanocrystallization (grains of 50–80 nm in size). Nanocrystallized alloy generates 30 % higher recovery stresses (up to 1450 MPa) and 10% higher completely recoverable strains (more than 8 %) as compared to the polygonized alloy, while having comparable mechanical properties in tension.


    Paper ID: JAI100383

    DOI: 10.1520/JAI100383

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    Title Functional Properties of Nanostructured Ti-50.0 at % Ni Alloys
    Symposium Fatigue and Fracture of Medical Metallic Materials and Devices, 2005-11-11
    Committee E08