A physically based methodology for predicting anisotropic creep properties of Ni-based superalloys
来源期刊：Rare Metals2016年第8期
论文作者：Jia Huang Duo-Qi Shi Xiao-Guang Yang
文章页码：606 - 614
摘 要：This paper is focused on developing suitable methodology for predicting creep characteristics（i.e., the minimum creep strain rate, stress rupture life and time to a specified creep strain） of typical Ni-based directionally solidified（DS） and single-crystal（SC） superalloys. A modern method with high accuracy on simulating wide ranging creep properties was fully validated by a sufficient amount of experimental data, which was then developed to model anisotropic creep characteristics by introducing a simple orientation factor defined by the ultimate tensile strength（UTS）. Physical confidence on this methodology is provided by the well-predicted transitions of creep deformation mechanisms. Meanwhile, this method was further adopted to innovatively evaluate the creep properties of different materials from a relative perspective.
Jia Huang，Duo-Qi Shi，Xiao-Guang Yang
School of Energy and Power Engineering, Beihang University
摘 要：This paper is focused on developing suitable methodology for predicting creep characteristics（i.e., the minimum creep strain rate, stress rupture life and time to a specified creep strain） of typical Ni-based directionally solidified（DS） and single-crystal（SC） superalloys. A modern method with high accuracy on simulating wide ranging creep properties was fully validated by a sufficient amount of experimental data, which was then developed to model anisotropic creep characteristics by introducing a simple orientation factor defined by the ultimate tensile strength（UTS）. Physical confidence on this methodology is provided by the well-predicted transitions of creep deformation mechanisms. Meanwhile, this method was further adopted to innovatively evaluate the creep properties of different materials from a relative perspective.
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