|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||J-100: Influence of Aluminum Additions to the Hall-Petch Relation in Single Phase FCC CoCrFeNi based High Entropy Alloys
||Abhinav Jagetia, Sriswaroop Dasari, Vishal Soni, Rajarshi Banerjee
|On-Site Speaker (Planned)
While the beneficial effects of Aluminum to the mechanical properties of FCC based HEA’s have been extensively studied, a systematic investigation of the role of Al in solid solution strengthening and strain hardening has not been reported in literature so far. The addition of Al to 3d transition metal based HEA’s produces a large atomic size misfit and modulus mismatch which could potentially affect the strain hardening co-efficient and increase the friction stress. This paper attempts to develop a Hall-Petch relation which incorporates the two primary strengthening effects for single phase HEA’s: solid solution strengthening and grain boundary strengthening. The solid solution strengthening effect was incorporated in the lattice friction term along with the Peierls-Nabarro stress. The effect of Al content on the lattice friction term, σ0, and the strain hardening co-efficient, K has been systematically investigated by examining the tensile properties of the alloys.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume