アルミニウム合金板の伸びに及ぼすｎ値と転位組織の影響

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タイトル別名
  • Effect of n value and dislocation structures on the elongation of aluminum alloy sheets
  • アルミニウム ゴウキンバン ノ ノビ ニ オヨボス nチ ト テンイ ソシキ ノ エイキョウ

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抄録

The effects of the n value and dislocation structures on the elongation of aluminum alloy sheets were investigated. The n value of the aluminum alloy was not constant. It increased to the maximum n value and decreased with strain. When the n value was constant, dislocation cell structures were observed. When the n value decreased, microbands were observed. It was considered that an increasing n value denoted an increasing dislocation density and a decreasing n value denoted a dynamic recovery occurring such as the formation of microbands. The decreasing rate after the maximum n value was a more important parameter than the average or the maximum n value for the relationship with the elongation. The Al–Mg–Si alloys and the Al-low Mg alloys had a highly decreasing n value rates. The pure aluminum and Al-high Mg alloys had low decreasing n value rates. It was considered that the highly decreasing rate after the maximum n value suggested a dynamic recovery and easily occurring local necking.

収録刊行物

  • 軽金属

    軽金属 58 (7), 290-294, 2008

    一般社団法人 軽金属学会

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