Visualization of stacking faults in fcc crystals in plastic deformations

2011/03/05 by Takeshi Kawasaki, Kawasaki, Takeshi, Akira Ōnuki +2
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Force Microscopy Techniques and Applications #High-Velocity Impact and Material Behavior #Microstructure and mechanical properties #Soft Condensed Matter (cond-mat.soft) #cond-mat.soft

paper · pdf · doi:10.48550/arxiv.1103.1051

11 pages, 8 figures

openalex publication_date 2011/03/05 · arxiv created 2011/11/27 · arxiv updated 2011/11/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Using molecular dynamics simulation, we investigate the dynamics of stacking faults in fcc crystals in uniaxial stretching in a Lennard-Jones binary mixture composed of 4096 particles in three dimensions. We visualize stacking faults using a disorder variable D_j(t) for each particle j constructed from local bond order parameters based on spherical harmonics (Steinhardt order parameters). Also introducing a method of bond breakage, we examine how stacking faults are formed and removed by collective particle motions. These processes are relevant in plasticity of fcc crystals.

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