高完全度銅結晶におけるgrown-in転位の運動開始応力

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タイトル別名
  • The Beginning of Motion of Dislocations in Highly Perfect Copper Crystals
  • コウ カンゼンド ドウ ケッショウ ニ オケル grown in テンイ ノ

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抄録

Using an etch pit technique, which is applicable to distinguish between edge and 30°-screw dislocations, the shear stress τ0 necessary to move grown-in dislocations in highly perfect copper crystals is studied in relation to the condition of the crystal surface. The main results obtained are as follows: (i) Surface removal results in the remarkable reduction of τ0, which is more conspicuous in 30°-screw dislocation than in the edge one. (ii) Both edge and 30°-screw dislocations become very mobile at low stress levels with the reduction of partial pressure of O2 in the annealing atmosphere. (iii) Neither the surface-step formation in the motion of dislocations with screw character nor jogs along those with the edge character are found to have an important effect on τ0.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 43 (5), 364-371, 1979

    公益社団法人 日本金属学会

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