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arXiv · 0709.0568

Plastic flow in polycrystal states in a binary mixture

Toshiyuki Hamanaka·Akira Onuki
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Abstract

Using molecular dynamics simulation we examine dynamics in sheared polycrystal states in a binary mixture containing 10% larger particles in two dimensions. We find large stress fluctuations arising from sliding motions of the particles at the grain boundaries, which occur cooperatively to release the elastic energy stored. These dynamic processes are visualized with the aid of a sixfold angle $α_j(t)$ representing the local crystal orientation and a disorder variable $D_j(t)$ representing a deviation from the hexagonal order for particle $j$.

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Toshiyuki Hamanaka, Akira Onuki. 2007-09-05. Plastic flow in polycrystal states in a binary mixture. https://doi.org/10.1103/physreve.77.042501

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