Pinning of dislocations in disordered alloys: effects of dislocation orientation

dc.contributor.authorZaiser, Michael
dc.contributor.authorWu, Ronghai
dc.date.accessioned2023-06-26
dc.date.available2023-10-16T20:51:48Z
dc.date.created2022
dc.date.issued2023-06-26
dc.description.abstractThe current interest in compositionally complex alloys including so called high entropy alloys has caused renewed interest in the general problem of solute hardening. It has been suggested that this problem can be addressed by treating the alloy as an effective medium containing a random distribution of dilatation and compression centers representing the volumetric misfit of atoms of different species. The mean square stresses arising from such a random distribution can be calculated analytically, their spatial correlations are strongly anisotropic and exhibit long-range tails with third-order power law decay (Geslin and Rodney 2021; Geslin et al. 2021). Here we discuss implications of the anisotropic and long-range nature of the correlation functions for the pinning of dislocations of arbitrary orientation. While edge dislocations are found to follow the standard pinning paradigm, for dislocations of near screw orientation we demonstrate the co-existence of two types of pinning energy minima.en
dc.identifier.citationMaterials Theory 6 (2022): 4. <https://materialstheory.springeropen.com/articles/10.1186/s41313-021-00036-2>
dc.identifier.doihttps://doi.org/10.1186/s41313-021-00036-2
dc.identifier.opus-id23418
dc.identifier.urihttps://open.fau.de/handle/openfau/23418
dc.identifier.urnurn:nbn:de:bvb:29-opus4-234181
dc.language.isoen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.de
dc.subject.ddcDDC Classification::6 Technik, Medizin, angewandte Wissenschaften :: 62 Ingenieurwissenschaften :: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
dc.titlePinning of dislocations in disordered alloys: effects of dislocation orientationen
dc.typearticle
dcterms.publisherFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
local.date.prevpublished2022-01-06
local.document.articlenumber4
local.journal.titleMaterials Theory
local.journal.volume6
local.sendToDnbfree*
local.subject.fakultaetTechnische Fakultät
local.subject.sammlungUniversität Erlangen-Nürnberg / Von der FAU geförderte Open Access Artikel / Von der FAU geförderte Open Access Artikel 2022
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