Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure

In this work, Si(x)CoCrNi (x = 0, 0.1, 0.2, 0.3, 0.4, molar ratio) alloys were designed by introducing elemental Si into CoCrNi, a medium-entropy alloy (MEA). The effects of Si addition on the microstructure and mechanical properties of the as-cast SiCoCrNi alloys were investigated. The results sugg...

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Detalles Bibliográficos
Autores principales: Yi, Hailong, Bi, Mengyuan, Yang, Kang, Zhang, Bing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7663278/
https://www.ncbi.nlm.nih.gov/pubmed/33142889
http://dx.doi.org/10.3390/ma13214909
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author Yi, Hailong
Bi, Mengyuan
Yang, Kang
Zhang, Bing
author_facet Yi, Hailong
Bi, Mengyuan
Yang, Kang
Zhang, Bing
author_sort Yi, Hailong
collection PubMed
description In this work, Si(x)CoCrNi (x = 0, 0.1, 0.2, 0.3, 0.4, molar ratio) alloys were designed by introducing elemental Si into CoCrNi, a medium-entropy alloy (MEA). The effects of Si addition on the microstructure and mechanical properties of the as-cast SiCoCrNi alloys were investigated. The results suggested that a novel Si-rich face-centred cubic (FCC) phase formed in the Si(0.3)CoCrNi and Si(0.4)CoCrNi alloys. The Si-rich FCC phase, which featured high hardness and was located between the dendrites of the matrix FCC phase (with higher phase fraction), significantly increased the yield strength of the Si(0.4)CoCrNi alloys five times compared with the CoCrNi alloy.
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spelling pubmed-76632782020-11-14 Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure Yi, Hailong Bi, Mengyuan Yang, Kang Zhang, Bing Materials (Basel) Communication In this work, Si(x)CoCrNi (x = 0, 0.1, 0.2, 0.3, 0.4, molar ratio) alloys were designed by introducing elemental Si into CoCrNi, a medium-entropy alloy (MEA). The effects of Si addition on the microstructure and mechanical properties of the as-cast SiCoCrNi alloys were investigated. The results suggested that a novel Si-rich face-centred cubic (FCC) phase formed in the Si(0.3)CoCrNi and Si(0.4)CoCrNi alloys. The Si-rich FCC phase, which featured high hardness and was located between the dendrites of the matrix FCC phase (with higher phase fraction), significantly increased the yield strength of the Si(0.4)CoCrNi alloys five times compared with the CoCrNi alloy. MDPI 2020-10-31 /pmc/articles/PMC7663278/ /pubmed/33142889 http://dx.doi.org/10.3390/ma13214909 Text en © 2020 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 Communication
Yi, Hailong
Bi, Mengyuan
Yang, Kang
Zhang, Bing
Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure
title Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure
title_full Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure
title_fullStr Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure
title_full_unstemmed Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure
title_short Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure
title_sort significant improvement the mechanical properties of cocrni alloy by tailoring a dual fcc-phase structure
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7663278/
https://www.ncbi.nlm.nih.gov/pubmed/33142889
http://dx.doi.org/10.3390/ma13214909
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AT bimengyuan significantimprovementthemechanicalpropertiesofcocrnialloybytailoringadualfccphasestructure
AT yangkang significantimprovementthemechanicalpropertiesofcocrnialloybytailoringadualfccphasestructure
AT zhangbing significantimprovementthemechanicalpropertiesofcocrnialloybytailoringadualfccphasestructure

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