Solute atmosphere around an edge dislocation in Al-based ternary alloys |
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Authors: | Taichi Abe Hidehiro Onodera |
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Affiliation: | 1. National Institute for Materials Science, Computational Materials Science Research Group, Tsukuba, 305-0047, Ibarki, Japan
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Abstract: | We evaluated the solute atmosphere around a moving dislocation and the dragging stress due to the atmosphere in binary and ternary Al-based alloys in terms of a chemical potential gradient by modifying the method proposed by Yoshinaga et al. In ternary alloys, we analyzed formation of the complex solute atmosphere around a straight edge dislocation and the dragging stress in terms of a misfit parameter of a solute element (positive or negative) and an interaction parameter between solute elements (attractive or repulsive). |
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