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Molecular Dynamics Simulation of Porous Layer-enhanced Dislocation Emission and Crack Propagation in Iron CrystalD. Li1), F.Y. Meng1), X.Q. Ma1), L.J. Qiao2) and W.Y. Chu2) 1) Department of Physics... the process of dislocation emission and crack propagation in a slab of Fe crystal with and without a porous layer on the surface of the crack. The results show that when there is a porous layer......
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Thermo-activated Dislocation Emission at the Cu/Nb Interface Revealed by Molecular Dynamics SimulationsDejun Yu1), Yue Zhang1) and Kaiming Wang2) 1) Anshan Normal University, Anshan 114005, China 2... unstable at simulation temperatures higher than 600 K, resulting in the emission of dislocations and loops within one or more slip systems. The emission process is found to be thermally-activated, i.e.......
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to the increase in dislocation density. Continuous emission of dislocations from grain boundaries is observed in many grains. Inclusions can sustain large dislocation pile-ups at the inclusion interfaces...Dislocation Source and Pile-up in a Twinning-induced Plasticity Steel at High-Cycle FatigueRendong Liu1,Zhiyuan Liang2,Li Lin1,Mingxin Huang31. Iron and Steel Research Institute,Ansteel Group2......
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emission. Key words: initial plasticity; nanoindentation; multiscale simulation; dislocation  ... dislocation emission results in the discontinuity in the load versus displacement curve. Fig.2 Snapshot of atoms under indenter and corresponding out-of-plane displacement plot at the 30th step......
Evolution of dislocation cells during plastic deformation ZHOU Zhi-min(周志敏)1, SUN Yan-rui(孙艳蕊)1, ZHOU Hai-tao(周海涛)2 (1. College of Science, Northeastern University, Shenyang 110004, China; 2... understood. It is still an unsolved question whether or not finer grain sizes down to 100nm could be reached. A semi-quantitative model for the evolution of dislocation cells in plastic deformation......
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