1810 引張変形時におけるアモルファス金属の局所格子不安定性(J06-2 マイクロ・ナノ構造と特性評価,J06 計算マイクロ・ナノメカニクス)

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  • 1810 Local Lattice Instability of Amorphous Metals under Tension

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In the present study, an amorphous Ni-Al binary alloy is made and subjected to tension by means of molecular dynamics simulation. The initial equilibrium is made by a melt-quench simulation of a single crystal in which Ni or Al atoms are randomly arranged on the fcc lattice point. The amorphous metal is then subjected to tension under periodic boundary condition. The collapse or reconfiguration of local atom clusters are discussed on the basis of positiveness of elastic stiffness coefficient, or the lattice stability, at each atom point.

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