Solution hardening in body-centered cubic quaternary alloys interpreted using Suzuki's kink-solute interaction model

SCRIPTA MATERIALIA

卷:165

Article

Rao, S. I.²  Antillon, E.²  Woodward, C.¹  Akdim, B.²  Parthasarathy, T. A.²  Senkov, O. N.² 

[1] Wright Patterson Air Force Labs, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA

[2] UES Inc, 4401 Dayton Xenia Rd, Dayton, OH 45432 USA

关键词: Dislocation theory;    Modeling;    Simulation;    Hardness;    Suzuki model;   

DOI  :  10.1016/j.scriptamat.2019.02.012

来源: Elsevier

【 摘 要 】

Room temperature strength of nine multi-principle element body-centered cubic alloys are predicted using atomistic potentials and a solution-hardening model. The complex solute dislocation interactions are estimated using Embedded Atom Method potentials. At least six of these alloys are known to form single-phase solid solutions on annealing. Assuming that strength is rate limited by screw motion by kink migration, the interaction energies are incorporated into Suzuki's model for kink-solute interactions and evaluated at room temperature. The method predicts room temperature yield strength across all the alloys with a standard error of 13%. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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