کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1562798 | 999597 | 2010 | 5 صفحه PDF | دانلود رایگان |
The structural, mechanical and electronic properties of δ phase and γ″ phase in Inconel 718 superalloy have been studied by using first-principles based on density functional theory. The structures of both the phases are optimized and the calculated results are in good agreement with the experimental results. The formation energies of δ phase and γ″ phase are calculated to be −1.48 eV per atom and −0.69 eV per atom, respectively. This suggests that δ phase is thermodynamically more stable than γ″ phase. The relatively high values of C11–C12 and B/G indicate that both the phases are hard and have good ductility. The bonding character has been analyzed based on the partial density of states, Mulliken population and charge density distribution.
Journal: Computational Materials Science - Volume 49, Issue 2, August 2010, Pages 414–418