Creep Damage Process of Ni-Base Superalloy Caused by Stress-Induced Anisotropic Atomic Diffusion
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概要
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In order to make clear the mechanism of the directional coarsening of γ phases (rafting) of Ni-base superalloy under uni-axial strain, molecular dynamics (MD) analysis was applied to analyze the effect of strain on the diffusion characteristics around the interface between different materials. In a Ni (001)/Al (001) interface structure, the stress induced diffusion of Al atoms perpendicular to the interface was found. The stress induced anisotropic diffusion of Al was also found in a Ni (001)/Ni3Al (001) interface. These results imply that it is highly possible the rafting occurs predominantly by the stress induced anisotropic diffusion of Al atoms.
著者
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Suzuki Ken
Fracture And Reliability Research Institute Graduate School Of Engineering Tohoku University
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SUZUKI Ken
Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University
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INOUE Tatsuya
Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University
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MIURA Hideo
Fracture and Reliability Research Institute (FRRI), Graduate School of Engineering, Tohoku University
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ITO Hiroyuki
Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University
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SUZUKI Ken
Fracture and Reliability Research Institute (FRRI), Graduate School of Engineering, Tohoku University
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