Selection of die material and its impact on the multi-material extrusion of bimetallic AZ31B–Ti6Al4V components for aeronautical applications

Fernández, Daniel, Rodríguez Prieto, Álvaro y Camacho, Ana María . (2021) Selection of die material and its impact on the multi-material extrusion of bimetallic AZ31B–Ti6Al4V components for aeronautical applications. Materials (2021), 14 -24, 7568

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Título Selection of die material and its impact on the multi-material extrusion of bimetallic AZ31B–Ti6Al4V components for aeronautical applications
Autor(es) Fernández, Daniel
Rodríguez Prieto, Álvaro
Camacho, Ana María
Materia(s) Ingeniería Mecánica
Abstract This paper investigates the effect that the selection of the die material generates on the extrusion process of bimetallic cylindrical billets combining a magnesium alloy core (AZ31B) and a titanium alloy sleeve (Ti6Al4V) of interest in aeronautical applications. A robust finite element model is developed to analyze the variation in the extrusion force, damage distribution, and wear using different die materials. The results show that die material is a key factor to be taken into account in multi-material extrusion processes. The die material selection can cause variations in the extrusion force from 8% up to 15%, changing the effect of the extrusion parameters, for example, optimum die semi-angle. Damage distribution in the extrudate is also affected by die material, mainly in the core. Lastly, die wear is the most affected parameter due to the different hardness of the materials, as well as due to the variations in the normal pressure and sliding velocity, finding critical values in the friction coefficient for which the die cannot be used for more than one forming stage because of the heavy wear suffered. These results can potentially be used to improve the efficiency of this kind of extrusion process and the quality of the extruded part that, along with the use of lightweight materials, can contribute to sustainable production approaches.
Palabras clave bimetallic extrusion
multi-material
Ti6Al4V
AZ31B
die material
force
induced damage
wear
Editor(es) MDPI
Fecha 2021-12-09
Formato application/pdf
Identificador bibliuned:DptoICyF-ETSI-Articulos-Arodriguez-0011
http://e-spacio.uned.es/fez/view/bibliuned:DptoICyF-ETSI-Articulos-Arodriguez-0011
DOI - identifier https://doi.org/10.3390/ma14247568
ISSN - identifier 1996-1944
Nombre de la revista Materials
Número de Volumen 14
Número de Issue 24
Publicado en la Revista Materials (2021), 14 -24, 7568
Idioma eng
Versión de la publicación publishedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto
Notas adicionales La versión registrada de este artículo, publicado por primera vez en Materials (2021), 14 -24, 7568, está disponible en línea en el sitio web de la editorial: MDPI https://doi.org/10.3390/ma14247568
Notas adicionales The registered version of this article, first published in Materials (2021), 14-24, 7568, is available online at the publisher's website: MDPI https://doi.org/10.3390/ma14247568

 
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Creado: Mon, 08 Apr 2024, 17:15:00 CET