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Effect of Zn Content on the Microstructure and Mechanical Properties of Mg–Al–Sn–Mn Alloys

High performance Mg–6Al–3Sn–0.25Mn–xZn alloys (x = 0, 0.5, 1.0, 1.5, and 2.0 wt %) without rare earth were designed. The effects of different Zn contents on the microstructure and mechanical properties were systematically investigated. The addition of Zn obviously refines the as-cast alloys dendriti...

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Autores principales: Zhao, Tianshuo, Hu, Yaobo, Pan, Fusheng, He, Bing, Guan, Maosheng, Yuan, Yuan, Tang, Aitao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6803948/
https://www.ncbi.nlm.nih.gov/pubmed/31547571
http://dx.doi.org/10.3390/ma12193102
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author Zhao, Tianshuo
Hu, Yaobo
Pan, Fusheng
He, Bing
Guan, Maosheng
Yuan, Yuan
Tang, Aitao
author_facet Zhao, Tianshuo
Hu, Yaobo
Pan, Fusheng
He, Bing
Guan, Maosheng
Yuan, Yuan
Tang, Aitao
author_sort Zhao, Tianshuo
collection PubMed
description High performance Mg–6Al–3Sn–0.25Mn–xZn alloys (x = 0, 0.5, 1.0, 1.5, and 2.0 wt %) without rare earth were designed. The effects of different Zn contents on the microstructure and mechanical properties were systematically investigated. The addition of Zn obviously refines the as-cast alloys dendritic structure because of the increase in the number in the second phase. For the as-extruded alloys, an appropriate amount of Zn promotes complete recrystallization, thus increasing the grain size. As the Zn content increases, the texture gradually evolves into a typical strong basal texture, which means that the basal slip is difficult to initiate. Meanwhile, the addition of Zn promotes the precipitation of small-sized second phases, which can hinder the dislocation movement. The combination of texture strengthening and precipitation strengthening is the main reason for the improvement of alloys’ strength.
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spelling pubmed-68039482019-11-18 Effect of Zn Content on the Microstructure and Mechanical Properties of Mg–Al–Sn–Mn Alloys Zhao, Tianshuo Hu, Yaobo Pan, Fusheng He, Bing Guan, Maosheng Yuan, Yuan Tang, Aitao Materials (Basel) Article High performance Mg–6Al–3Sn–0.25Mn–xZn alloys (x = 0, 0.5, 1.0, 1.5, and 2.0 wt %) without rare earth were designed. The effects of different Zn contents on the microstructure and mechanical properties were systematically investigated. The addition of Zn obviously refines the as-cast alloys dendritic structure because of the increase in the number in the second phase. For the as-extruded alloys, an appropriate amount of Zn promotes complete recrystallization, thus increasing the grain size. As the Zn content increases, the texture gradually evolves into a typical strong basal texture, which means that the basal slip is difficult to initiate. Meanwhile, the addition of Zn promotes the precipitation of small-sized second phases, which can hinder the dislocation movement. The combination of texture strengthening and precipitation strengthening is the main reason for the improvement of alloys’ strength. MDPI 2019-09-23 /pmc/articles/PMC6803948/ /pubmed/31547571 http://dx.doi.org/10.3390/ma12193102 Text en © 2019 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
Zhao, Tianshuo
Hu, Yaobo
Pan, Fusheng
He, Bing
Guan, Maosheng
Yuan, Yuan
Tang, Aitao
Effect of Zn Content on the Microstructure and Mechanical Properties of Mg–Al–Sn–Mn Alloys
title Effect of Zn Content on the Microstructure and Mechanical Properties of Mg–Al–Sn–Mn Alloys
title_full Effect of Zn Content on the Microstructure and Mechanical Properties of Mg–Al–Sn–Mn Alloys
title_fullStr Effect of Zn Content on the Microstructure and Mechanical Properties of Mg–Al–Sn–Mn Alloys
title_full_unstemmed Effect of Zn Content on the Microstructure and Mechanical Properties of Mg–Al–Sn–Mn Alloys
title_short Effect of Zn Content on the Microstructure and Mechanical Properties of Mg–Al–Sn–Mn Alloys
title_sort effect of zn content on the microstructure and mechanical properties of mg–al–sn–mn alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6803948/
https://www.ncbi.nlm.nih.gov/pubmed/31547571
http://dx.doi.org/10.3390/ma12193102
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