引張変形したAl-Zn-Mg合金における粒界近傍のSTM観察 STM observations near grain boundaries in deformed Al-Zn-Mg alloy

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Age-hardened Al–5.4 mass%Zn–1.8 mass%Mg alloy specimens were deformed to 0.3% strain at room temperature. The accurate surface topography in the vicinity of the grain boundaries including folds which was generated in the grain interior from the triple point was observed by scanning tunneling microscopy. At a triple point, a fold was generated along the extension of the grain boundary having a larger step as well as a higher maximum resolved shear stress on the boundary plane than the other two. At another triple point, when a fold was generated ahead of a grain boundary by a shear displacement parallel to the specimen surface, one of the adjacent grain boundaries had a step. In this case, the surface topography had a sunk shape between the fold and the step. When two steps were formed simultaneously at two neighboring grain boundaries, fold was not generated. Among the grain boundaries surrounding a single grain, displacement was observed only in part. When a large step occurred at one of these boundaries, it caused a deformation at the grain interior up to a distance about 200 μm.

収録刊行物

  • 軽金属

    軽金属 47(1), 34-38, 1997-01-30

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10003794861
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    4118762
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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