E-viri
Recenzirano
-
Zhang, P.; Yuan, Y.; Li, J.; Yan, J. B.; Zhang, H.; Zhao, X. B.; Shi, X. B.; Gu, Y. F.
Metallurgical and materials transactions. A, Physical metallurgy and materials science, 02/2022, Letnik: 53, Številka: 2Journal Article
After compressive deformation at 1000 °C and a strain rate of 2.5 × 10 −4 s −1 , deformation mechanisms in the 001-oriented single-crystal nickel-based superalloy CMSX-4 are investigated. We found that besides dislocation climb, microtwinning and three different shearing processes, which separately result in the formation of pairs of a /2〈101〉 dislocations, a 〈001〉 superdislocations and isolated superlattice stacking faults, operate simultaneously during plastic deformation, hence providing new insights into understanding the deformation mechanisms in nickel-based superalloys. Graphical Abstract
