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Erschienen in: Physics of Metals and Metallography 13/2021

18.08.2021 | STRUCTURE, PHASE TRANSFORMATIONS, AND DIFFUSION

Microstructure and Compressive Properties of Co21Cu16Fe21Ti21V21 High Entropy Alloy

verfasst von: J. J. Yi, L. Yang, M. Q. Xu, L. Wang

Erschienen in: Physics of Metals and Metallography | Ausgabe 13/2021

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Abstract

The phase components, microstructure, and compressive properties of a novel Co21Cu16Fe21Ti21V21 high entropy alloy in as-cast and annealed conditions were investigated. The phase composition in both states was composed of FCC+BCC. The BCC phase was the primary phase, and the FCC phase corresponded to Cu-rich regions. Through an annealing treatment, the yield strength, σ0.2, decreased from 1950 ± 15 MPa to 1600 ±15 MPa, but the elongation of around 13% changed slightly. In this work, the solid solution strengthening in the Cu-rich regions was deteriorated due to the ejection of the rest of principal elements via annealing, while the number of microvoids seemed to be decreased against those in the as-cast alloy. The combination of both factors simultaneously takes responsibility for the decreased strength and the enhanced elongation.
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Metadaten
Titel
Microstructure and Compressive Properties of Co21Cu16Fe21Ti21V21 High Entropy Alloy
verfasst von
J. J. Yi
L. Yang
M. Q. Xu
L. Wang
Publikationsdatum
18.08.2021
Verlag
Pleiades Publishing
Erschienen in
Physics of Metals and Metallography / Ausgabe 13/2021
Print ISSN: 0031-918X
Elektronische ISSN: 1555-6190
DOI
https://doi.org/10.1134/S0031918X2113010X

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