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  1. No Access

    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...

    Sho Hayakawa, Kohei Doihara, Taira Okita, Mitsuhiro Itakura… in Journal of Materials Science (2019)

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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...

    Sho Hayakawa, Taira Okita, Mitsuhiro Itakura… in Journal of Materials Science (2019)

  3. No Access

    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. ...

    Artenis Bendo, Kenji Matsuda, Seungwon Lee… in Journal of Materials Science (2018)

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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...

    Masatake Yamaguchi, Ken-Ichi Ebihara… in Metallurgical and Materials Transactions A (2011)

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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...

    Tomoaki Suzudo, Hideo Kaburaki, Mitsuhiro Itakura in MRS Online Proceedings Library (2011)