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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