|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deformation and Damage Mechanisms in High Temperature Ni, Co and Fe-based Superalloys
||Investigation of Deformation Pathways of Gamma’ Phase in Ni-, Co- and Co-Ni-base Superalloys
||Longsheng Feng, Duchao Lv, Robert Rhein, Michael Titus, Tresa Pollock, Yunzhi Wang
|On-Site Speaker (Planned)
Gamma' phase is the main strengthening phase in nickel-based, cobalt-based, and cobalt-nickel-based superalloys. Different deformation mechanisms of gamma’ particles have been observed in these three alloys, including anti-phase boundary and super-lattice intrinsic stacking fault. In this study, by combining generalized-stacking-fault (GSF) energy calculations and phase field simulations, differences in deformation pathways of the gamma’ phase in these three alloys are explored. Various factors are investigated to determine their effects on the deformation pathways, including particle shape, gamma channel width, applied stress and the GSF energy landscape. Understanding these effects can help alloy design and manufacturing process to achieve better creep properties.
||Planned: Supplemental Proceedings volume