R-curve Evaluation of Copper and Nickel Single Crystals Using Atomistic Simulations
作者： Xiao Zhuo , Jang Kim , Hyeon Beom
DOI: 10.3390/CRYST8120441
关键词: Strain energy release rate 、 Crack growth resistance curve 、 Brittleness 、 Deformation mechanism 、 Single crystal 、 Materials science 、 Copper 、 Composite material 、 Fracture mechanics 、 Lattice constant
摘要: The technique of molecular statics (MS) simulation was employed to determine the crack growth resistance curve Cu and Ni single crystals. Copper crystal nanoplates with an edge subjected a tensile displacement were simulated. Stress-displacement curves snapshots atomic configuration corresponding different levels presented elucidate deformation mechanism. It observed that propagated step by in brittle manner, amount at each half lattice parameter. Through energy consideration, critical strain release rate onset propagation calculated. is larger than because effect.
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