銀の高温圧縮中における粒界移動

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  • 小川 豊
    東北大学大学院，現在：日本原子力研究所

書誌事項

タイトル別名
  • Grain Boundary Migration of Silver under Compression at 500°C
  • ギン ノ コウオン アッシュク チュウ ニ オケル リュウカイ イドウ
  • Grain Boundary Migration of Silver under Compression at 500°C

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抄録

Grain boundary migration of poly- and bi-crystalline silver under compression at 500°C was observed with an optical microscope. The results obtained in poly-crystalline specimens are as follows: (1) One grain was absorved by the surrounding grains. (2) The direction of grain boundary migration was rotated around a triple point. (3) Twin boundaries intersecting a grain boundary restrained migration of the grain boundary.<BR>When a bi-crystalline specimen was subjected to strain gradient compression, the grain boundary migrated at first to the center of curveture (to low strain side) and then to the high strain side. The driving force of the grain boundary migration was thought to arise from grain boundary energy in the initial stage and from stored energy of deformation in the following one. The acceleration of grain boundary migration under applied plastic stress was interpreted as due to strain enhanced self-diffusion in grain boundary.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 34 (12), 1177-1184, 1970

    公益社団法人 日本金属学会

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