Developing grain refinement and superplasticity in a magnesium alloy processed by high-pressure torsion

Masaaki Kai, Zenji Horita, Terence G. Langdon

    研究成果: ジャーナルへの寄稿学術誌査読

    191 被引用数 (Scopus)

    抄録

    Experiments were conducted on a Mg-9% Al alloy to evaluate the microstructural characteristics and the tensile properties at elevated temperatures after processing by high-pressure torsion (HPT) at room temperature and at 423 K. Ultrafine grain sizes were achieved by processing samples in both an extruded and a cast condition. The results demonstrate the viability of using HPT as a processing technique for achieving significant grain refinement in magnesium alloys which are not processed easily by equal-channel angular pressing (ECAP). Superplastic ductilities were achieved in tensile testing at a temperature of 473 K with a maximum measured elongation of 810%. In general, higher superplastic elongations were achieved after processing by HPT at 423 K because of the development of some limited internal cracking when processing at room temperature.

    本文言語英語
    ページ(範囲)117-124
    ページ数8
    ジャーナルMaterials Science and Engineering: A
    488
    1-2
    DOI
    出版ステータス出版済み - 8月 15 2008

    !!!All Science Journal Classification (ASJC) codes

    • 材料科学一般
    • 凝縮系物理学
    • 材料力学
    • 機械工学

    フィンガープリント

    「Developing grain refinement and superplasticity in a magnesium alloy processed by high-pressure torsion」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル