A physically based methodology for predicting anisotropic creep properties of Ni-based superalloys

摘要: This paper is focused on developing suitable methodology for predicting creep characteristics (i.e., the minimum strain rate, stress rupture life and time to a specified strain) of typical Ni-based directionally solidified (DS) single-crystal (SC) superalloys. A modern method with high accuracy simulating wide ranging properties was fully validated by sufficient amount experimental data, which then developed model anisotropic introducing simple orientation factor defined ultimate tensile strength (UTS). Physical confidence this provided well-predicted transitions deformation mechanisms. Meanwhile, further adopted innovatively evaluate different materials from relative perspective.