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Superalloys 2012 (Twelfth International Symposium)
To understand the effects of alloying elements on the creep rate of Ni-base superalloys, factors entering into a secondary creep rate are calculated via first-principles calculations based on density functional theory for 26 Ni 31 X systems where X = Al, Co, Cr, Cu, Fe, Hf, Ir, Mn, Mo, Nb, Os, Pd, Pt, Re, Rh, Ru, Sc, Si, Ta, Tc, Ti, V, W, Y, Zr, and Zn. They are volume, elastic properties, stacking fault energy, and diffusivity. It is found that shear modulus, Young's modulus, and roughlydoi:10.7449/2012/superalloys_2012_455_461 fatcat:nanfwyvhkbh6lbfelsrpmwzj7m