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Effect of Si on Microstructure and Mechanical Properties of FeCrNi Medium Entropy Alloys
FeCrNi medium entropy alloy (MEA) has been widely regarded for its excellent mechanical properties and corrosion resistance. However, insufficient strength limits its industrial application. Intermetallic particle dispersion strengthening is considered to be an effective method to improve strength,...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095722/ https://www.ncbi.nlm.nih.gov/pubmed/37048991 http://dx.doi.org/10.3390/ma16072697 |
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author | Ding, Fang Cao, Yuankui Fu, Ao Wang, Jian Zhang, Weidong Qiu, Jingwen Liu, Bin |
author_facet | Ding, Fang Cao, Yuankui Fu, Ao Wang, Jian Zhang, Weidong Qiu, Jingwen Liu, Bin |
author_sort | Ding, Fang |
collection | PubMed |
description | FeCrNi medium entropy alloy (MEA) has been widely regarded for its excellent mechanical properties and corrosion resistance. However, insufficient strength limits its industrial application. Intermetallic particle dispersion strengthening is considered to be an effective method to improve strength, which is expected to solve this problem. In this work, microstructural evolution and mechanical behavior of FeCrNi MEA with different Si content were investigated. We found that the precipitation of fine σ particles can be formed in situ by thermomechanical treatment of Si doping FeCrNi MEAs. The FeCrNiSi(0.15) MEA exhibits a good combination of strength and ductility, with yield strength and tensile elongation of 1050 MPa and 7.84%, respectively. The yield strength is almost five times that of the as-cast FeCrNi MEA. The strength enhancement is mainly attributed to the grain-boundary strengthening and precipitation strengthening caused by fine σ particles. |
format | Online Article Text |
id | pubmed-10095722 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-100957222023-04-13 Effect of Si on Microstructure and Mechanical Properties of FeCrNi Medium Entropy Alloys Ding, Fang Cao, Yuankui Fu, Ao Wang, Jian Zhang, Weidong Qiu, Jingwen Liu, Bin Materials (Basel) Article FeCrNi medium entropy alloy (MEA) has been widely regarded for its excellent mechanical properties and corrosion resistance. However, insufficient strength limits its industrial application. Intermetallic particle dispersion strengthening is considered to be an effective method to improve strength, which is expected to solve this problem. In this work, microstructural evolution and mechanical behavior of FeCrNi MEA with different Si content were investigated. We found that the precipitation of fine σ particles can be formed in situ by thermomechanical treatment of Si doping FeCrNi MEAs. The FeCrNiSi(0.15) MEA exhibits a good combination of strength and ductility, with yield strength and tensile elongation of 1050 MPa and 7.84%, respectively. The yield strength is almost five times that of the as-cast FeCrNi MEA. The strength enhancement is mainly attributed to the grain-boundary strengthening and precipitation strengthening caused by fine σ particles. MDPI 2023-03-28 /pmc/articles/PMC10095722/ /pubmed/37048991 http://dx.doi.org/10.3390/ma16072697 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Ding, Fang Cao, Yuankui Fu, Ao Wang, Jian Zhang, Weidong Qiu, Jingwen Liu, Bin Effect of Si on Microstructure and Mechanical Properties of FeCrNi Medium Entropy Alloys |
title | Effect of Si on Microstructure and Mechanical Properties of FeCrNi Medium Entropy Alloys |
title_full | Effect of Si on Microstructure and Mechanical Properties of FeCrNi Medium Entropy Alloys |
title_fullStr | Effect of Si on Microstructure and Mechanical Properties of FeCrNi Medium Entropy Alloys |
title_full_unstemmed | Effect of Si on Microstructure and Mechanical Properties of FeCrNi Medium Entropy Alloys |
title_short | Effect of Si on Microstructure and Mechanical Properties of FeCrNi Medium Entropy Alloys |
title_sort | effect of si on microstructure and mechanical properties of fecrni medium entropy alloys |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095722/ https://www.ncbi.nlm.nih.gov/pubmed/37048991 http://dx.doi.org/10.3390/ma16072697 |
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