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Breakdown of Varvenne scaling in (AuNiPdPt)$_{1-x}$ Cu$_{x}$ high-entropy alloys

Thiel, F.; Utt, D.; Kauffmann, A.; Nielsch, K.; Albe, K.; Heilmaier, M.; Freudenberger, J.

Abstract:
The compositional dependence of the yield strength σ$_{y}$ has been studied for a series of polycrystalline (AuNiPdPt)$_{1-x}$Cu$_{x}$ alloys by means of compression tests. σ$_{y}$ is found to decrease linearly with increasing Cu concentration. This behaviour is in contradiction to the generalised theory for solid solution strengthening in concentrated solid solutions provided by Varvenne et al. [1]. A breakdown of the scaling behaviour is found as σy should be non-linear and slightly increasing when modifying the composition from AuNiPdPt to AuCuNiPdPt.

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Postprint §
DOI: 10.5445/IR/1000105790
Frei zugänglich ab 01.06.2021
Originalveröffentlichung
DOI: 10.1016/j.scriptamat.2020.02.007
Scopus
Zitationen: 2
Web of Science
Zitationen: 1
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 05.2020
Sprache Englisch
Identifikator ISSN: 1359-6462
KITopen-ID: 1000105790
HGF-Programm 34.13.02 (POF III, LK 01)
Portfolio Material zukünftige Energief.
Erschienen in Scripta materialia
Band 181
Seiten 15–18
Schlagwörter high-entropy alloys, noble metals, mechanical properties, solution strengthening, yield stress predictions
Nachgewiesen in Scopus
Web of Science
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