Abstract:Ni-based superalloys used for thermal power plants have been subjected to random creep-fatigue load in high-temperature environment to counter global warming and compensate the fluctuation of the output of renewable energies. However, under the creep-fatigue condition, intergranular cracking was found to be accelerated, and the fracture life of the alloy was significantly decreased. Therefore, it is essential to elucidate the mechanism of this acceleration of crack propagation rate and to develop a quantitativ… Show more
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