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First-Principles Study on the Cu/Fe Interface Properties of Ternary Cu-Fe-X Alloys

The supersaturated Fe in Cu is known to reduce the electrical conductivity of Cu severely. However, the precipitation kinetics of Fe from Cu are sluggish. Alloying is one of the effective ways to accelerate the aging precipitation of Cu-Fe alloys. Nucleation plays an important role in the early stag...

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Autores principales: Wang, Yufei, Li, Min, Gao, Haiyan, Wang, Jun, Sun, Baode
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7412005/
https://www.ncbi.nlm.nih.gov/pubmed/32668580
http://dx.doi.org/10.3390/ma13143112
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author Wang, Yufei
Li, Min
Gao, Haiyan
Wang, Jun
Sun, Baode
author_facet Wang, Yufei
Li, Min
Gao, Haiyan
Wang, Jun
Sun, Baode
author_sort Wang, Yufei
collection PubMed
description The supersaturated Fe in Cu is known to reduce the electrical conductivity of Cu severely. However, the precipitation kinetics of Fe from Cu are sluggish. Alloying is one of the effective ways to accelerate the aging precipitation of Cu-Fe alloys. Nucleation plays an important role in the early stage of aging. The interface property of Cu/γ–Fe is a key parameter in understanding the nucleation mechanism of γ-Fe, which can be obviously affected with the addition of alloying elements. In this paper, first principles calculations were carried out to investigate the influence of alloying elements on the interface properties, including the geometric optimizations, interfacial energy, work of adhesion and electronic structure. Based on the previous research, 14 elements including B, Si, P, Al, Ge, S, Mg, Ag, Cd, Sn, In, Sb, Zr and Bi were selected for investigation. Results showed that all these alloying elements tend to concentrate in the Cu matrix with the specific substitution position of the atoms determined by the binding energy between Fe and alloy element (X). The bonding strength of the Cu/γ-Fe interface will decrease obviously after adding Ag, Mg and Cd, while a drop in interfacial energy of Cu/γ–Fe will happen when alloyed with Al, B, S, P, Si, Ge, Sn, Zr, Bi, Sb and In. Further study of the electronic structure found that Al and Zr were not effective alloying elements.
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spelling pubmed-74120052020-08-25 First-Principles Study on the Cu/Fe Interface Properties of Ternary Cu-Fe-X Alloys Wang, Yufei Li, Min Gao, Haiyan Wang, Jun Sun, Baode Materials (Basel) Article The supersaturated Fe in Cu is known to reduce the electrical conductivity of Cu severely. However, the precipitation kinetics of Fe from Cu are sluggish. Alloying is one of the effective ways to accelerate the aging precipitation of Cu-Fe alloys. Nucleation plays an important role in the early stage of aging. The interface property of Cu/γ–Fe is a key parameter in understanding the nucleation mechanism of γ-Fe, which can be obviously affected with the addition of alloying elements. In this paper, first principles calculations were carried out to investigate the influence of alloying elements on the interface properties, including the geometric optimizations, interfacial energy, work of adhesion and electronic structure. Based on the previous research, 14 elements including B, Si, P, Al, Ge, S, Mg, Ag, Cd, Sn, In, Sb, Zr and Bi were selected for investigation. Results showed that all these alloying elements tend to concentrate in the Cu matrix with the specific substitution position of the atoms determined by the binding energy between Fe and alloy element (X). The bonding strength of the Cu/γ-Fe interface will decrease obviously after adding Ag, Mg and Cd, while a drop in interfacial energy of Cu/γ–Fe will happen when alloyed with Al, B, S, P, Si, Ge, Sn, Zr, Bi, Sb and In. Further study of the electronic structure found that Al and Zr were not effective alloying elements. MDPI 2020-07-13 /pmc/articles/PMC7412005/ /pubmed/32668580 http://dx.doi.org/10.3390/ma13143112 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 Article
Wang, Yufei
Li, Min
Gao, Haiyan
Wang, Jun
Sun, Baode
First-Principles Study on the Cu/Fe Interface Properties of Ternary Cu-Fe-X Alloys
title First-Principles Study on the Cu/Fe Interface Properties of Ternary Cu-Fe-X Alloys
title_full First-Principles Study on the Cu/Fe Interface Properties of Ternary Cu-Fe-X Alloys
title_fullStr First-Principles Study on the Cu/Fe Interface Properties of Ternary Cu-Fe-X Alloys
title_full_unstemmed First-Principles Study on the Cu/Fe Interface Properties of Ternary Cu-Fe-X Alloys
title_short First-Principles Study on the Cu/Fe Interface Properties of Ternary Cu-Fe-X Alloys
title_sort first-principles study on the cu/fe interface properties of ternary cu-fe-x alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7412005/
https://www.ncbi.nlm.nih.gov/pubmed/32668580
http://dx.doi.org/10.3390/ma13143112
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