Deformation of Age-hardenable Al-3%Cu Non-isoaxial Bicrystals

DOI Web Site 参考文献5件
  • Izumi Osamu
    The Research Institute for Iron, Steel and Other Metals, Tohoku University
  • Takasugi Takayuki
    The Research Institute for Iron, Steel and Other Metals, Tohoku University

抄録

Tensile tests were performed on bicrystals and corresponding component crystals of Al-3%Cu heat-treated to different stages of ageing, that is, those of supersaturation, intermediate phase formation and stable phase precipitation. The stress-strain curves were analysed from the point of view of the effect of ageing and crystal orientation on deformation. The following results were obtained: (1) The strength of a supersaturated solid solution is determined by the compatibility condition and the dislocation pile-up mechanism at a grain boundary. (2) No simple relationship was established for both intermediate phase formation and stable phase precipitation. (3) The “grain boundary strength” Δσε of the supersaturated solid solution shows a parabolic relation against strain. (4) The “grain boundary strength” for the intermediate phase initially shows a parabolic strain dependence, but decreases to a negative value as deformation proceeds. (5) The “grain boundary strength” for the stable precipitation shows a parabolic strain dependence similar to that at the supersaturation stage.

収録刊行物

参考文献 (5)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ