Influence of Plastic Deformation on the Clustering of Vacancies in Quenched Gold

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  • Kiritani Michio
    Laboratory of Crystal Physics, Faculty of Science Hiroshima University
  • Sato Akikazu
    Laboratory of Crystal Physics, Faculty of Science Hiroshima University
  • Sawai Kiyoyuki
    Laboratory of Crystal Physics, Faculty of Science Hiroshima University
  • Yoshida Sho
    Laboratory of Crystal Physics, Faculty of Science Hiroshima University

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Plastic deformtion of quenched gold is found to enhance the formation of stacking fault tetrahedra. The experimental results on the effect of deformation during the two step aging indicate that the enhanced nucleation of tetrahedra is not caused directly by the deformation, such as by the geometrical reaction between glide dislocations, but occurs during aging after deformation. The variation of the influence of deformation with the concentration of quenched-in vacancies denies other possibilities than the enhanced nucleation caused by the localized vacancies produced by jogs on moving dislocations. The mechanism for the appearance of tetrahedra in straight rows along ⟨110⟩ is clarified. The influence of deformation on the formation of vacancy clustered defects is compared between quenched gold and aluminum.

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