Low-Temperature and high-Strain-Rate superplasticity of ultrafine-Grained A7075 processed by high-Pressure torsion

Seungwon Lee, Katsumi Watanabe, Kenji Matsuda, Zenji Horita

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    An A7075 alloy was processed by high-pressure torsion (HPT) under an applied pressure of 6 GPa for 1, 3 and 5 revolutions with a rotation speed of 1 rpm at room temperature. Vickers microhardness saturated to a level of 220 Hv after the HPT processing and the grain size was refined to 3120 nm at the state of the hardness saturation. Tensile tests were conducted with initial strain rates from 2.0

    Original languageEnglish
    Pages (from-to)1341-1347
    Number of pages7
    JournalMaterials Transactions
    Volume59
    Issue number8
    DOIs
    Publication statusPublished - 2018

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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