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Effect of Y Addition on the Microstructure and Mechanical Properties of ZM31 Alloy

Effects of different Y contents (0, 0.3, 0.7, 1.5, 3, 5 and 10 wt.%) on the microstructure, thermal stability and mechanical properties of Mg-3Zn-1Mn (ZM31) alloys were systematically studied. The existence form and action mechanism of Y in the experimental alloys were investigated. The results reve...

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Autores principales: Ye, Xue, Cao, Hongshuai, Qi, Fugang, Ouyang, Xiaoping, Ye, Zhisong, Hou, Caihong, Li, Lianhui, Zhang, Dingfei, Zhao, Nie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040611/
https://www.ncbi.nlm.nih.gov/pubmed/31991923
http://dx.doi.org/10.3390/ma13030583
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author Ye, Xue
Cao, Hongshuai
Qi, Fugang
Ouyang, Xiaoping
Ye, Zhisong
Hou, Caihong
Li, Lianhui
Zhang, Dingfei
Zhao, Nie
author_facet Ye, Xue
Cao, Hongshuai
Qi, Fugang
Ouyang, Xiaoping
Ye, Zhisong
Hou, Caihong
Li, Lianhui
Zhang, Dingfei
Zhao, Nie
author_sort Ye, Xue
collection PubMed
description Effects of different Y contents (0, 0.3, 0.7, 1.5, 3, 5 and 10 wt.%) on the microstructure, thermal stability and mechanical properties of Mg-3Zn-1Mn (ZM31) alloys were systematically studied. The existence form and action mechanism of Y in the experimental alloys were investigated. The results revealed that with the change of Y content, the main phases of the ZM31-xY alloys changed from Mg(7)Zn(3) phase, I-phase, I + W-phase, W-phase, W + LPSO phase to LPSO phase. When Y content was low (≤1.5%), hot extrusion could break up the residual phases after homogenization to form dispersed fine rare-earth phase particles, and fine second phases would also precipitate in the grain, which could inhibit the grain growth. When Y content was high (≥3%), the experimental alloys were only suitable for high-temperature extrusion due to the formation of the high heat stable rare-earth LPSO phase. In addition, Y could evidently enhance the mechanical properties of the as-extruded ZM31 alloy, of which the ZM31-10Y alloy had the best mechanical properties, that is, the tensile and yield strengths are 403 MPa and 342 MPa. The high strengths of the alloys were mainly determined by fine grain strengthening, rare-earth phase strengthening and dispersion strengthening of fine α-Mn particles.
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spelling pubmed-70406112020-03-09 Effect of Y Addition on the Microstructure and Mechanical Properties of ZM31 Alloy Ye, Xue Cao, Hongshuai Qi, Fugang Ouyang, Xiaoping Ye, Zhisong Hou, Caihong Li, Lianhui Zhang, Dingfei Zhao, Nie Materials (Basel) Article Effects of different Y contents (0, 0.3, 0.7, 1.5, 3, 5 and 10 wt.%) on the microstructure, thermal stability and mechanical properties of Mg-3Zn-1Mn (ZM31) alloys were systematically studied. The existence form and action mechanism of Y in the experimental alloys were investigated. The results revealed that with the change of Y content, the main phases of the ZM31-xY alloys changed from Mg(7)Zn(3) phase, I-phase, I + W-phase, W-phase, W + LPSO phase to LPSO phase. When Y content was low (≤1.5%), hot extrusion could break up the residual phases after homogenization to form dispersed fine rare-earth phase particles, and fine second phases would also precipitate in the grain, which could inhibit the grain growth. When Y content was high (≥3%), the experimental alloys were only suitable for high-temperature extrusion due to the formation of the high heat stable rare-earth LPSO phase. In addition, Y could evidently enhance the mechanical properties of the as-extruded ZM31 alloy, of which the ZM31-10Y alloy had the best mechanical properties, that is, the tensile and yield strengths are 403 MPa and 342 MPa. The high strengths of the alloys were mainly determined by fine grain strengthening, rare-earth phase strengthening and dispersion strengthening of fine α-Mn particles. MDPI 2020-01-26 /pmc/articles/PMC7040611/ /pubmed/31991923 http://dx.doi.org/10.3390/ma13030583 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
Ye, Xue
Cao, Hongshuai
Qi, Fugang
Ouyang, Xiaoping
Ye, Zhisong
Hou, Caihong
Li, Lianhui
Zhang, Dingfei
Zhao, Nie
Effect of Y Addition on the Microstructure and Mechanical Properties of ZM31 Alloy
title Effect of Y Addition on the Microstructure and Mechanical Properties of ZM31 Alloy
title_full Effect of Y Addition on the Microstructure and Mechanical Properties of ZM31 Alloy
title_fullStr Effect of Y Addition on the Microstructure and Mechanical Properties of ZM31 Alloy
title_full_unstemmed Effect of Y Addition on the Microstructure and Mechanical Properties of ZM31 Alloy
title_short Effect of Y Addition on the Microstructure and Mechanical Properties of ZM31 Alloy
title_sort effect of y addition on the microstructure and mechanical properties of zm31 alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040611/
https://www.ncbi.nlm.nih.gov/pubmed/31991923
http://dx.doi.org/10.3390/ma13030583
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