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Effects of Nb Additions and Heat Treatments on the Microstructure, Hardness and Wear Resistance of CuNiCrSiCoTiNb(x) High-Entropy Alloys

In this research, a set of CuNiCrSiCoTi (H-0Nb), CuNiCrSiCoTiNb(0.5) (H-0.5Nb) and CuNiCrSiCoTiNb(1) (H-1Nb) high-entropy alloys (HEAs) were melted in a vacuum induction furnace. The effects of Nb additions on the microstructure, hardness, and wear behavior of these HEAs (compared with a CuBe commer...

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Autores principales: Avila-Salgado, Denis Ariel, Juárez-Hernández, Arturo, Lara Banda, María, Bedolla-Jacuinde, Arnoldo, Guerra, Francisco V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9498077/
https://www.ncbi.nlm.nih.gov/pubmed/36141081
http://dx.doi.org/10.3390/e24091195
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author Avila-Salgado, Denis Ariel
Juárez-Hernández, Arturo
Lara Banda, María
Bedolla-Jacuinde, Arnoldo
Guerra, Francisco V.
author_facet Avila-Salgado, Denis Ariel
Juárez-Hernández, Arturo
Lara Banda, María
Bedolla-Jacuinde, Arnoldo
Guerra, Francisco V.
author_sort Avila-Salgado, Denis Ariel
collection PubMed
description In this research, a set of CuNiCrSiCoTi (H-0Nb), CuNiCrSiCoTiNb(0.5) (H-0.5Nb) and CuNiCrSiCoTiNb(1) (H-1Nb) high-entropy alloys (HEAs) were melted in a vacuum induction furnace. The effects of Nb additions on the microstructure, hardness, and wear behavior of these HEAs (compared with a CuBe commercial alloy) in the as-cast (AC) condition, and after solution (SHT) and aging (AT) heat treatments, were investigated using X-ray diffraction, optical microscopy, and electron microscopy. A ball-on-disc configuration tribometer was used to study wear behavior. XRD and SEM results showed that an increase in Nb additions and modification by heat treatment (HT) favored the formation of BCC and FCC crystal structures (CS), dendritic regions, and the precipitation of phases that promoted microstructure refinement during solidification. Increases in hardness of HEA systems were recorded after heat treatment and Nb additions. Maximum hardness values were recorded for the H-1Nb alloy with measured increases from 107.53 HRB (AC) to 112.98 HRB, and from 1104 HV to 1230 HV (aged for 60 min). However, the increase in hardness caused by Nb additions did not contribute to wear resistance response. This can be attributed to a high distribution of precipitated phases rich in high-hardness NiSiTi and CrSi. Finally, the H-0Nb alloy exhibited the best wear resistance behavior in the aged condition of 30 min, with a material loss of 0.92 mm(3).
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spelling pubmed-94980772022-09-23 Effects of Nb Additions and Heat Treatments on the Microstructure, Hardness and Wear Resistance of CuNiCrSiCoTiNb(x) High-Entropy Alloys Avila-Salgado, Denis Ariel Juárez-Hernández, Arturo Lara Banda, María Bedolla-Jacuinde, Arnoldo Guerra, Francisco V. Entropy (Basel) Article In this research, a set of CuNiCrSiCoTi (H-0Nb), CuNiCrSiCoTiNb(0.5) (H-0.5Nb) and CuNiCrSiCoTiNb(1) (H-1Nb) high-entropy alloys (HEAs) were melted in a vacuum induction furnace. The effects of Nb additions on the microstructure, hardness, and wear behavior of these HEAs (compared with a CuBe commercial alloy) in the as-cast (AC) condition, and after solution (SHT) and aging (AT) heat treatments, were investigated using X-ray diffraction, optical microscopy, and electron microscopy. A ball-on-disc configuration tribometer was used to study wear behavior. XRD and SEM results showed that an increase in Nb additions and modification by heat treatment (HT) favored the formation of BCC and FCC crystal structures (CS), dendritic regions, and the precipitation of phases that promoted microstructure refinement during solidification. Increases in hardness of HEA systems were recorded after heat treatment and Nb additions. Maximum hardness values were recorded for the H-1Nb alloy with measured increases from 107.53 HRB (AC) to 112.98 HRB, and from 1104 HV to 1230 HV (aged for 60 min). However, the increase in hardness caused by Nb additions did not contribute to wear resistance response. This can be attributed to a high distribution of precipitated phases rich in high-hardness NiSiTi and CrSi. Finally, the H-0Nb alloy exhibited the best wear resistance behavior in the aged condition of 30 min, with a material loss of 0.92 mm(3). MDPI 2022-08-26 /pmc/articles/PMC9498077/ /pubmed/36141081 http://dx.doi.org/10.3390/e24091195 Text en © 2022 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
Avila-Salgado, Denis Ariel
Juárez-Hernández, Arturo
Lara Banda, María
Bedolla-Jacuinde, Arnoldo
Guerra, Francisco V.
Effects of Nb Additions and Heat Treatments on the Microstructure, Hardness and Wear Resistance of CuNiCrSiCoTiNb(x) High-Entropy Alloys
title Effects of Nb Additions and Heat Treatments on the Microstructure, Hardness and Wear Resistance of CuNiCrSiCoTiNb(x) High-Entropy Alloys
title_full Effects of Nb Additions and Heat Treatments on the Microstructure, Hardness and Wear Resistance of CuNiCrSiCoTiNb(x) High-Entropy Alloys
title_fullStr Effects of Nb Additions and Heat Treatments on the Microstructure, Hardness and Wear Resistance of CuNiCrSiCoTiNb(x) High-Entropy Alloys
title_full_unstemmed Effects of Nb Additions and Heat Treatments on the Microstructure, Hardness and Wear Resistance of CuNiCrSiCoTiNb(x) High-Entropy Alloys
title_short Effects of Nb Additions and Heat Treatments on the Microstructure, Hardness and Wear Resistance of CuNiCrSiCoTiNb(x) High-Entropy Alloys
title_sort effects of nb additions and heat treatments on the microstructure, hardness and wear resistance of cunicrsicotinb(x) high-entropy alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9498077/
https://www.ncbi.nlm.nih.gov/pubmed/36141081
http://dx.doi.org/10.3390/e24091195
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