Aging behavior of Al-Mg-Si alloys processed by high-pressure torsion

Daichi Akama, Zenji Horita, Kenji Matsuda, Shoichi Hirosawa

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    4 被引用数 (Scopus)

    抄録

    This research investigates simultaneous strengthening by grain refinement and fine precipitation in age-hardenable Al-Mg-Si alloys containing an additional element of either Ag, Cu, Pt or Pd. The alloys were solution-treated and processed by high-pressure torsion (HPT) at room temperature under a pressure of 6 GPa. They were aged at a temperature of 373 K for up to a total period of 6.7 hours. Vickers microhardness was measured after selected periods of aging and the microstructures were observed by transmission electron microscopy. It was found that, in all alloys, the grain sizes after HPT were refined to 300-400 nm and there were significant increases in the hardness through the HPT processing. The hardness was further increased by the subsequent ageing treatment, confirming the simultaneous strengthening by grain refinement and fine precipitation. However, the aging behavior was different depending on the alloying compositions.

    本文言語英語
    ホスト出版物のタイトルNanomaterials by Severe Plastic Deformation, NanoSPD5
    ページ259-264
    ページ数6
    DOI
    出版ステータス出版済み - 2 25 2011
    イベント5th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD5 - Nanjing, 中国
    継続期間: 3 21 20113 25 2011

    出版物シリーズ

    名前Materials Science Forum
    667-669
    ISSN(印刷版)0255-5476

    その他

    その他5th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD5
    国/地域中国
    CityNanjing
    Period3/21/113/25/11

    All Science Journal Classification (ASJC) codes

    • 材料科学(全般)
    • 凝縮系物理学
    • 材料力学
    • 機械工学

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