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Effect of Sc and Zr Additions on Recrystallization Behavior and Intergranular Corrosion Resistance of Al-Zn-Mg-Cu Alloys

The recrystallization and intergranular corrosion behaviors impacted by the additions of Sc and Zr in Al-Zn-Mg-Cu alloys are investigated. The stronger effect of coherent Al(3)(Sc(1−x)Zr(x)) phases on pinning dislocation resulted in a lower degree of recrystallization in Al-Zn-Mg-Cu-Sc-Zr alloy, whi...

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Autores principales: Xia, Peng, Wang, Shuncheng, Huang, Huilan, Zhou, Nan, Song, Dongfu, Jia, Yiwang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8509478/
https://www.ncbi.nlm.nih.gov/pubmed/34639908
http://dx.doi.org/10.3390/ma14195516
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author Xia, Peng
Wang, Shuncheng
Huang, Huilan
Zhou, Nan
Song, Dongfu
Jia, Yiwang
author_facet Xia, Peng
Wang, Shuncheng
Huang, Huilan
Zhou, Nan
Song, Dongfu
Jia, Yiwang
author_sort Xia, Peng
collection PubMed
description The recrystallization and intergranular corrosion behaviors impacted by the additions of Sc and Zr in Al-Zn-Mg-Cu alloys are investigated. The stronger effect of coherent Al(3)(Sc(1−x)Zr(x)) phases on pinning dislocation resulted in a lower degree of recrystallization in Al-Zn-Mg-Cu-Sc-Zr alloy, while the subgrain boundaries can escape from the pinning of Al(3)Zr phases and merge with each other, bringing about a higher degree of recrystallization in Al-Zn-Mg-Cu-Zr alloy. A low degree of recrystallization promotes the precipitation of grain boundary precipitates (GBPs) with a discontinuous distribution, contributing to the high corrosion resistance of Al-Zn-Mg-Cu-Sc-Zr alloy in the central layer. The primary Al(3)(Sc(1−x)Zr(x)) phase promotes recrystallization due to particle-stimulated nucleation (PSN), and acts as the cathode to stimulate an accelerated electrochemical process between the primary Al(3)(Sc(1−x)Zr(x)) particles and GBPs, resulting in a sharp decrease of the corrosion resistance in the surface layer of Al-Zn-Mg-Cu-Sc-Zr alloy.
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spelling pubmed-85094782021-10-13 Effect of Sc and Zr Additions on Recrystallization Behavior and Intergranular Corrosion Resistance of Al-Zn-Mg-Cu Alloys Xia, Peng Wang, Shuncheng Huang, Huilan Zhou, Nan Song, Dongfu Jia, Yiwang Materials (Basel) Article The recrystallization and intergranular corrosion behaviors impacted by the additions of Sc and Zr in Al-Zn-Mg-Cu alloys are investigated. The stronger effect of coherent Al(3)(Sc(1−x)Zr(x)) phases on pinning dislocation resulted in a lower degree of recrystallization in Al-Zn-Mg-Cu-Sc-Zr alloy, while the subgrain boundaries can escape from the pinning of Al(3)Zr phases and merge with each other, bringing about a higher degree of recrystallization in Al-Zn-Mg-Cu-Zr alloy. A low degree of recrystallization promotes the precipitation of grain boundary precipitates (GBPs) with a discontinuous distribution, contributing to the high corrosion resistance of Al-Zn-Mg-Cu-Sc-Zr alloy in the central layer. The primary Al(3)(Sc(1−x)Zr(x)) phase promotes recrystallization due to particle-stimulated nucleation (PSN), and acts as the cathode to stimulate an accelerated electrochemical process between the primary Al(3)(Sc(1−x)Zr(x)) particles and GBPs, resulting in a sharp decrease of the corrosion resistance in the surface layer of Al-Zn-Mg-Cu-Sc-Zr alloy. MDPI 2021-09-23 /pmc/articles/PMC8509478/ /pubmed/34639908 http://dx.doi.org/10.3390/ma14195516 Text en © 2021 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
Xia, Peng
Wang, Shuncheng
Huang, Huilan
Zhou, Nan
Song, Dongfu
Jia, Yiwang
Effect of Sc and Zr Additions on Recrystallization Behavior and Intergranular Corrosion Resistance of Al-Zn-Mg-Cu Alloys
title Effect of Sc and Zr Additions on Recrystallization Behavior and Intergranular Corrosion Resistance of Al-Zn-Mg-Cu Alloys
title_full Effect of Sc and Zr Additions on Recrystallization Behavior and Intergranular Corrosion Resistance of Al-Zn-Mg-Cu Alloys
title_fullStr Effect of Sc and Zr Additions on Recrystallization Behavior and Intergranular Corrosion Resistance of Al-Zn-Mg-Cu Alloys
title_full_unstemmed Effect of Sc and Zr Additions on Recrystallization Behavior and Intergranular Corrosion Resistance of Al-Zn-Mg-Cu Alloys
title_short Effect of Sc and Zr Additions on Recrystallization Behavior and Intergranular Corrosion Resistance of Al-Zn-Mg-Cu Alloys
title_sort effect of sc and zr additions on recrystallization behavior and intergranular corrosion resistance of al-zn-mg-cu alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8509478/
https://www.ncbi.nlm.nih.gov/pubmed/34639908
http://dx.doi.org/10.3390/ma14195516
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