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Keywords: Ni-base superalloy
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Proceedings Papers

Molecular Dynamics Analysis of the Acceleration of Intergranular Cracking of Ni-Base Superalloy Caused by Accumulation of Vacancies and Dislocations Around Grain Boundaries

Ryo Kikuchi, Shujiro Suzuki, Ken Suzuki
Proc. ASME. IMECE2020, Volume 12: Mechanics of Solids, Structures, and Fluids, V012T12A059, November 16–19, 2020
Paper No: IMECE2020-23352
DOI: https://doi.org/10.1115/IMECE2020-23352
...Abstract Abstract Ni-based superalloys with excellent high temperature strength have been used in advanced thermal power plants. It was found that grain boundary cracking is caused in the alloy under creep-fatigue loading due to the degradation of the crystallinity of grain boundaries...
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Topics: Creep, Dislocations, Fatigue, Fracture (Process), Grain boundaries, Molecular dynamics, Superalloys
Proceedings Papers

Degradation of the Strength of a Grain Boundary of Ni-Base Superalloys Under Creep-Fatigue Loading at Elevated Temperature

Yukako Takahashi, Yifan Luo, Kenta Ishihara, Shujiro Suzuki, Hideo Miura
Proc. ASME. IMECE2020, Volume 12: Mechanics of Solids, Structures, and Fluids, V012T12A071, November 16–19, 2020
Paper No: IMECE2020-24473
DOI: https://doi.org/10.1115/IMECE2020-24473
... cracking to intergranular cracking under the application of uniaxial tensile load. creep-fatigue damage EBSD analysis strength of a grain boundary Ni-base superalloy bicrystal micro tensile test DEGRADATION OF THE STRENGTH OF A GRAIN BOUNDARY OF Ni-BASE SUPERALLOYS UNDER CREEP-FATIGUE LOADING...
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Topics: Creep, Electron backscatter diffraction, Fatigue, Grain boundaries, Superalloys, Temperature