期刊
COMPUTATIONAL MATERIALS SCIENCE
卷 139, 期 -, 页码 225-233出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.commatsci.2017.08.002
关键词
Atomistic simulation; Ni-Al-Ti superalloys; Modified embedded-atom method
资金
- Civil Military Technology Cooperation Program of the Agency for Defense Development-South Korea [13-DU-MP-05]
- KIST Institutional Programs [2E24692]
Interatomic potentials for the Ni-Ti and Ni-Al-Ti systems have been developed based on the second nearest-neighbor modified embedded-atom method (2NN-MEAM) formalism. The Ni-Ti binary potential reproduces fundamental materials properties (structural, elastic, thermodynamic, and thermal stability) of alloy systems in reasonable agreement with experiments, first-principles calculations and thermodynamic calculations. Atomistic simulations using the Ni-Al-Ti ternary potential validate that the potential can be applied successfully to atomic-scale investigations to clarify the effects of titanium on important materials phenomena (site preference in gamma', gamma-gamma' phase transition, and segregation on grain boundaries) in Ni-Al-Ti ternary superalloys. (C) 2017 Elsevier B.V. All rights reserved.
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