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Effect of Al Element on the Microstructure and Properties of Cu-Ni-Fe-Mn Alloys

The effects of aluminum on the mechanical properties and corrosion behavior in artificial seawater of Cu-Ni-Fe-Mn alloys were investigated. Cu-7Ni-xAl-1Fe-1Mn samples, consisting of 0, 1, 3, 5, and 7 wt % aluminum along with the same contents of other alloying elements (Ni, Fe, and Mn), were prepare...

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Autores principales: Yang, Ran, Wen, Jiuba, Zhou, Yanjun, Song, Kexing, Song, Zhengcheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164195/
https://www.ncbi.nlm.nih.gov/pubmed/30235810
http://dx.doi.org/10.3390/ma11091777
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author Yang, Ran
Wen, Jiuba
Zhou, Yanjun
Song, Kexing
Song, Zhengcheng
author_facet Yang, Ran
Wen, Jiuba
Zhou, Yanjun
Song, Kexing
Song, Zhengcheng
author_sort Yang, Ran
collection PubMed
description The effects of aluminum on the mechanical properties and corrosion behavior in artificial seawater of Cu-Ni-Fe-Mn alloys were investigated. Cu-7Ni-xAl-1Fe-1Mn samples, consisting of 0, 1, 3, 5, and 7 wt % aluminum along with the same contents of other alloying elements (Ni, Fe, and Mn), were prepared. The microstructure of Cu-7Ni-xAl-1Fe-1Mn alloy was analyzed by Transmission Electron Microscopy (TEM), and its corrosion property was tested by an electrochemical system. The results show that the mechanical and corrosion properties of Cu-7Ni-xAl-1Fe-1Mn alloy have an obvious change with the aluminum content. The tensile strength has a peak value of 395 MPa by adding 3 wt % aluminum in the alloy. Moreover, the corrosion rate in artificial seawater of Cu-7Ni-3Al-1Fe-1Mn alloy is 0.0215 mm/a which exhibits a better corrosion resistance than the commercially used UNS C70600. It is confirmed that the second-phase transformation of Cu-7Ni-xAl-1Fe-1Mn alloy follows the sequence of α solid solution → Ni(3)Al → Ni(3)Al + NiAl → Ni(3)Al + NiAl(3). The electrochemical impedance spectroscopy (EIS) shows that the adding element aluminum in the Cupronickel can improve the corrosion resistance of Cu-7Ni-xAl-1Fe-1Mn alloy.
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spelling pubmed-61641952018-10-12 Effect of Al Element on the Microstructure and Properties of Cu-Ni-Fe-Mn Alloys Yang, Ran Wen, Jiuba Zhou, Yanjun Song, Kexing Song, Zhengcheng Materials (Basel) Article The effects of aluminum on the mechanical properties and corrosion behavior in artificial seawater of Cu-Ni-Fe-Mn alloys were investigated. Cu-7Ni-xAl-1Fe-1Mn samples, consisting of 0, 1, 3, 5, and 7 wt % aluminum along with the same contents of other alloying elements (Ni, Fe, and Mn), were prepared. The microstructure of Cu-7Ni-xAl-1Fe-1Mn alloy was analyzed by Transmission Electron Microscopy (TEM), and its corrosion property was tested by an electrochemical system. The results show that the mechanical and corrosion properties of Cu-7Ni-xAl-1Fe-1Mn alloy have an obvious change with the aluminum content. The tensile strength has a peak value of 395 MPa by adding 3 wt % aluminum in the alloy. Moreover, the corrosion rate in artificial seawater of Cu-7Ni-3Al-1Fe-1Mn alloy is 0.0215 mm/a which exhibits a better corrosion resistance than the commercially used UNS C70600. It is confirmed that the second-phase transformation of Cu-7Ni-xAl-1Fe-1Mn alloy follows the sequence of α solid solution → Ni(3)Al → Ni(3)Al + NiAl → Ni(3)Al + NiAl(3). The electrochemical impedance spectroscopy (EIS) shows that the adding element aluminum in the Cupronickel can improve the corrosion resistance of Cu-7Ni-xAl-1Fe-1Mn alloy. MDPI 2018-09-19 /pmc/articles/PMC6164195/ /pubmed/30235810 http://dx.doi.org/10.3390/ma11091777 Text en © 2018 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
Yang, Ran
Wen, Jiuba
Zhou, Yanjun
Song, Kexing
Song, Zhengcheng
Effect of Al Element on the Microstructure and Properties of Cu-Ni-Fe-Mn Alloys
title Effect of Al Element on the Microstructure and Properties of Cu-Ni-Fe-Mn Alloys
title_full Effect of Al Element on the Microstructure and Properties of Cu-Ni-Fe-Mn Alloys
title_fullStr Effect of Al Element on the Microstructure and Properties of Cu-Ni-Fe-Mn Alloys
title_full_unstemmed Effect of Al Element on the Microstructure and Properties of Cu-Ni-Fe-Mn Alloys
title_short Effect of Al Element on the Microstructure and Properties of Cu-Ni-Fe-Mn Alloys
title_sort effect of al element on the microstructure and properties of cu-ni-fe-mn alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164195/
https://www.ncbi.nlm.nih.gov/pubmed/30235810
http://dx.doi.org/10.3390/ma11091777
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