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Maintaining High Strength in Mg-LPSO Alloys with Low Yttrium Content Using Severe Plastic Deformation

Alternative processing routes such as powder metallurgy, the extrusion of recycled chips, or equal channel angular pressing (ECAP) have been considered for effective methods of maintaining the high mechanical strength of Mg-Y-Zn alloys containing long-period stacking ordered structures with respect...

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Detalles Bibliográficos
Autores principales: Garces, Gerardo, Cabeza, Sandra, Barea, Rafael, Pérez, Pablo, Adeva, Paloma
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5978110/
https://www.ncbi.nlm.nih.gov/pubmed/29734728
http://dx.doi.org/10.3390/ma11050733
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author Garces, Gerardo
Cabeza, Sandra
Barea, Rafael
Pérez, Pablo
Adeva, Paloma
author_facet Garces, Gerardo
Cabeza, Sandra
Barea, Rafael
Pérez, Pablo
Adeva, Paloma
author_sort Garces, Gerardo
collection PubMed
description Alternative processing routes such as powder metallurgy, the extrusion of recycled chips, or equal channel angular pressing (ECAP) have been considered for effective methods of maintaining the high mechanical strength of Mg-Y-Zn alloys containing long-period stacking ordered structures with respect to the alloy processed by the conventional extrusion of as-cast ingots with the advantage of minimizing the yttrium content. A yield stress similar to that found for extruded Mg(97)Y(2)Zn(1) alloy can be attained with only half of the usual yttrium and zinc additions thanks to the grain refinement induced by ECAP processing. The properties of Mg(98.5)Y(1)Zn(0.5) subjected to ECAP are maintained up to 200 °C, but superplastic behavior is found above this temperature when the alloy is processed through a powder metallurgy route.
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spelling pubmed-59781102018-05-31 Maintaining High Strength in Mg-LPSO Alloys with Low Yttrium Content Using Severe Plastic Deformation Garces, Gerardo Cabeza, Sandra Barea, Rafael Pérez, Pablo Adeva, Paloma Materials (Basel) Article Alternative processing routes such as powder metallurgy, the extrusion of recycled chips, or equal channel angular pressing (ECAP) have been considered for effective methods of maintaining the high mechanical strength of Mg-Y-Zn alloys containing long-period stacking ordered structures with respect to the alloy processed by the conventional extrusion of as-cast ingots with the advantage of minimizing the yttrium content. A yield stress similar to that found for extruded Mg(97)Y(2)Zn(1) alloy can be attained with only half of the usual yttrium and zinc additions thanks to the grain refinement induced by ECAP processing. The properties of Mg(98.5)Y(1)Zn(0.5) subjected to ECAP are maintained up to 200 °C, but superplastic behavior is found above this temperature when the alloy is processed through a powder metallurgy route. MDPI 2018-05-05 /pmc/articles/PMC5978110/ /pubmed/29734728 http://dx.doi.org/10.3390/ma11050733 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
Garces, Gerardo
Cabeza, Sandra
Barea, Rafael
Pérez, Pablo
Adeva, Paloma
Maintaining High Strength in Mg-LPSO Alloys with Low Yttrium Content Using Severe Plastic Deformation
title Maintaining High Strength in Mg-LPSO Alloys with Low Yttrium Content Using Severe Plastic Deformation
title_full Maintaining High Strength in Mg-LPSO Alloys with Low Yttrium Content Using Severe Plastic Deformation
title_fullStr Maintaining High Strength in Mg-LPSO Alloys with Low Yttrium Content Using Severe Plastic Deformation
title_full_unstemmed Maintaining High Strength in Mg-LPSO Alloys with Low Yttrium Content Using Severe Plastic Deformation
title_short Maintaining High Strength in Mg-LPSO Alloys with Low Yttrium Content Using Severe Plastic Deformation
title_sort maintaining high strength in mg-lpso alloys with low yttrium content using severe plastic deformation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5978110/
https://www.ncbi.nlm.nih.gov/pubmed/29734728
http://dx.doi.org/10.3390/ma11050733
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