Microstructural Evolution of γ'-Ni3Al Precipitates Affecting Mechanical Properties of Nickel- based Superalloys

Nickel-based superalloys are exceptional materials due to their novel two phase (γ-γ') microstructures. In this study, the effects of ternary alloying X element additions and heat treatment procedures on the microstructural evolution of γ'-Ni3Al precipitates and mechanical properties of Ni80Al15X5alloy systems (i.e. X = Cr, Co, Nb or Ti) will be presented. Furthermore, the results of the experimental studies will be supported by modelling and theoretical first-principles calculations via charge density difference (CDD), electron localization function (ELF) and density of states (DOS) simulations which demonstrate site preferences and bonding characteristics of alloying X element atoms with their next neighbour atoms.
Citation Formats
R. Eriş, M. V. Akdeniz, and A. Mehrabov, “Microstructural Evolution of γ’-Ni3Al Precipitates Affecting Mechanical Properties of Nickel- based Superalloys,” presented at the TMS 2020 Annual Meeting & Exhibition, (23 - 27 February 2020), California, United States Of America, 2020, Accessed: 00, 2021. [Online]. Available: http://www.programmaster.org/PM/PM.nsf/ApprovedAbstracts/3CCA9EADDCBDB1F88525843500692CF8?OpenDocument.