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Article
Screw dislocation–spherical void interactions in fcc metals and their dependence on stacking fault energy
We performed molecular dynamics simulations to evaluate the effects of stacking fault energy (SFE) on interactions between a screw dislocation and spherical voids in face-centered cubic (fcc) metals. It was ob...
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Article
Atomistic simulations for the effects of stacking fault energy on defect formations by displacement cascades in FCC metals under Poisson’s deformation
We performed molecular dynamics simulations of displacement cascades in FCC metals under Poisson’s deformation using interatomic potentials differing in stacking fault energy (SFE), in order to investigate the...
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Article
Atomic scale HAADF-STEM study of η′ and η 1 phases in peak-aged Al–Zn–Mg alloys
The microstructures of precipitates in Al–Zn–Mg alloys in peak-aged condition have been studied using scanning transmission electron microscope. The same thermo-mechanical treatment was applied in all alloys. ...
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Article
First-Principles Study on the Grain Boundary Embrittlement of Metals by Solute Segregation: Part II. Metal (Fe, Al, Cu)-Hydrogen (H) Systems
The microscopic mechanism of grain boundary (GB) embrittlement in metals by hydrogen segregation (trap**) has been not well understood for many years. From first-principles calculations, we show here that th...
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Article
Modeling of Subgrain Growth Kinetics: 3D Monte-Carlo Simulation
We used a three-dimensional Monte Carlo method to investigate subgrain growth with different initial values for average grain-boundary misorientation, and found that abnormal grain growth emerges for relativel...