Mechanical Behaviour of Crystals with Twinned Structure

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概要

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• The internal friction and the stress-strain behaviour are investigated on three kinds of materials which contain many twinned regions. A relaxation peak of internal friction with the activation energy (0.68±0.03) eV is observed in an 89 at% manganese-copper alloy. The peak is thought to be associated with the elementary process in the motion of surface dislocations (twin boundaries). Plastic flow possibly due to the motion of twinning surface dislocations is observed at relatively low stress level in this alloy. The relaxation peak is not found in gold-46.1 at% cadmium and indium-21 at% thallium alloys. Characteristics in a pseudo-elastic flow due to the motion of twinning surface dislocations are examined on the gold-cadmium alloys.

• 東北大学の論文

著者

• Aoyagi T.

  The Research Institute For Iron Steel And Other Metals

• Sumino K.

  The Research Institute For Iron Steel And Other Metals

関連論文

• Mechanical Behaviour of Crystals with Twinned Structure
• Internal Friction in Deformed Germanium Single Crystals
• Internal Friction in Deformed Germanium Crystals at Low Temperatures
• Easy Operation of Dislocation Sources in the Surface Region of Crystal during Plastic Deformation
• Surface Dislocations and the Growth of Deformation Twins
• Experimental Determination of Intrinsic Resistive Stress for Twinning Surface Dislocations

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