Phases, Microstructures and Mechanical Properties of CoCrNiCuZn High-Entropy Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering

In the study, an equiatomic CoCrNiCuZn high-entropy alloy (HEA) was prepared by mechanical alloying (MA) and the phases, microstructures, and thermal properties of the alloy powder were explored. The results suggest that a solid solution with body-centered cubic (BCC) phase and a crystalline size of...

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Autores principales: Sun, Yuchen, Ke, Boren, Li, Yulin, Yang, Kai, Yang, Mingqi, Ji, Wei, Fu, Zhengyi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7514605/
https://www.ncbi.nlm.nih.gov/pubmed/33266838
http://dx.doi.org/10.3390/e21020122
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author Sun, Yuchen
Ke, Boren
Li, Yulin
Yang, Kai
Yang, Mingqi
Ji, Wei
Fu, Zhengyi
author_facet Sun, Yuchen
Ke, Boren
Li, Yulin
Yang, Kai
Yang, Mingqi
Ji, Wei
Fu, Zhengyi
author_sort Sun, Yuchen
collection PubMed
description In the study, an equiatomic CoCrNiCuZn high-entropy alloy (HEA) was prepared by mechanical alloying (MA) and the phases, microstructures, and thermal properties of the alloy powder were explored. The results suggest that a solid solution with body-centered cubic (BCC) phase and a crystalline size of 10 nm formed after 60 h of milling. Subsequently, the alloy powder was consolidated by spark plasma sintering (SPS) at different temperatures (600 °C, 700 °C, 800 °C, and 900 °C). Two kinds of face-centered cubic (FCC) phases co-existed in the as-sintered samples. Besides, Vickers hardness and compressive strength of the consolidated alloy sintered at 900 °C were respectively 615 HV and 2121 MPa, indicating excellent mechanical properties.
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spelling pubmed-75146052020-11-09 Phases, Microstructures and Mechanical Properties of CoCrNiCuZn High-Entropy Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering Sun, Yuchen Ke, Boren Li, Yulin Yang, Kai Yang, Mingqi Ji, Wei Fu, Zhengyi Entropy (Basel) Article In the study, an equiatomic CoCrNiCuZn high-entropy alloy (HEA) was prepared by mechanical alloying (MA) and the phases, microstructures, and thermal properties of the alloy powder were explored. The results suggest that a solid solution with body-centered cubic (BCC) phase and a crystalline size of 10 nm formed after 60 h of milling. Subsequently, the alloy powder was consolidated by spark plasma sintering (SPS) at different temperatures (600 °C, 700 °C, 800 °C, and 900 °C). Two kinds of face-centered cubic (FCC) phases co-existed in the as-sintered samples. Besides, Vickers hardness and compressive strength of the consolidated alloy sintered at 900 °C were respectively 615 HV and 2121 MPa, indicating excellent mechanical properties. MDPI 2019-01-29 /pmc/articles/PMC7514605/ /pubmed/33266838 http://dx.doi.org/10.3390/e21020122 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sun, Yuchen
Ke, Boren
Li, Yulin
Yang, Kai
Yang, Mingqi
Ji, Wei
Fu, Zhengyi
Phases, Microstructures and Mechanical Properties of CoCrNiCuZn High-Entropy Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering
title Phases, Microstructures and Mechanical Properties of CoCrNiCuZn High-Entropy Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering
title_full Phases, Microstructures and Mechanical Properties of CoCrNiCuZn High-Entropy Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering
title_fullStr Phases, Microstructures and Mechanical Properties of CoCrNiCuZn High-Entropy Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering
title_full_unstemmed Phases, Microstructures and Mechanical Properties of CoCrNiCuZn High-Entropy Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering
title_short Phases, Microstructures and Mechanical Properties of CoCrNiCuZn High-Entropy Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering
title_sort phases, microstructures and mechanical properties of cocrnicuzn high-entropy alloy prepared by mechanical alloying and spark plasma sintering
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7514605/
https://www.ncbi.nlm.nih.gov/pubmed/33266838
http://dx.doi.org/10.3390/e21020122
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