Nanomechanics of slip avalanches in amorphous plasticity

Discrete stress relaxations (slip avalanches) in a model metallic glass under uniaxial compression are studied using a metadynamics algorithm for molecular simulation at experimental strain rates. The onset of yielding is observed at the first major stress drop, accompanied, upon analysis, by the fo...

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Veröffentlicht in:	Journal of the mechanics and physics of solids 2018-05, Vol.114 (C), p.158-171
Hauptverfasser:	Cao, Penghui, Dahmen, Karin A., Kushima, Akihiro, Wright, Wendelin J., Park, Harold S., Short, Michael P., Yip, Sidney
Format:	Artikel
Sprache:	eng
Schlagworte:	Amorphous materials Avalanches Computer simulation Crack propagation Deformation Deformation mechanisms Diffusion Edge dislocations Elastic deformation Low concentrations Materials Science Mechanical tests Mechanics Metallic glasses Modelling Molecular chains Nanotechnology Physics Plastic properties Serrated flow Shear band Shear bands Shear strength Slip Slip avalanches Strain Strain rate Strain-rate effects Stresses Superplasticity Transformations
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