Analysis of Favourable Process Conditions for the 2 Manufacturing of Thin-Wall Pieces of Mild Steel 3 Obtained by Wire and Arc Additive Manufacturing 4 (WAAM)

Prado-Cerqueira, José Luis; Diéguez, José Luis; Rodríguez-Prieto, Álvaro; María Aragón, Ana; Lorenzo-Martín, Cinta; Yanguas-Gil, Ángel

doi:10.3390/ma11081449

Analysis of Favourable Process Conditions for the 2 Manufacturing of Thin-Wall Pieces of Mild Steel 3 Obtained by Wire and Arc Additive Manufacturing 4 (WAAM)

Prado-Cerqueira, José Luis, Diéguez, José Luis, Rodríguez-Prieto, Álvaro, María Aragón, Ana, Lorenzo-Martín, Cinta y Yanguas-Gil, Ángel . (2018) Analysis of Favourable Process Conditions for the 2 Manufacturing of Thin-Wall Pieces of Mild Steel 3 Obtained by Wire and Arc Additive Manufacturing 4 (WAAM). Materials 2018, 11(8)

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Título	Analysis of Favourable Process Conditions for the 2 Manufacturing of Thin-Wall Pieces of Mild Steel 3 Obtained by Wire and Arc Additive Manufacturing 4 (WAAM)
Autor(es)	Prado-Cerqueira, José Luis Diéguez, José Luis Rodríguez-Prieto, Álvaro María Aragón, Ana Lorenzo-Martín, Cinta Yanguas-Gil, Ángel
Materia(s)	Ingeniería Mecánica
Abstract	One of the challenges in additive manufacturing (AM) of metallic materials is to obtain workpieces free of defects with excellent physical, mechanical, and metallurgical properties. In wire and arc additive manufacturing (WAAM) the influences of process conditions on thermal history, microstructure and resultant mechanical and surface properties of parts must be analyzed. In this work, 3D metallic parts of mild steel wire (American Welding Society-AWS ER70S-6) are built with a WAAM process by depositing layers of material on a substrate of a S235 JR steel sheet of 3 mm thickness under different process conditions, using as welding process the gas metal arc welding (GMAW) with cold metal transfer (CMT) technology, combined with a positioning system such as a computer numerical controlled (CNC) milling machine. Considering the hardness profiles, the estimated ultimate tensile strengths (UTS) derived from the hardness measurements and the microstructure findings, it can be concluded that the most favorable process conditions are the ones provided by CMT, with homogeneous hardness profiles, good mechanical strengths in accordance to conditions defined by standard, and without formation of a decohesionated external layer; CMT Continuous is the optimal option as the mechanical properties are better than single CMT.
Palabras clave	additive manufacturing WAAM GMAW cold metal transfer hardness; mechanical properties thermal input microstructure
Fecha	2018
Identificador	bibliuned:DptoICyF-ETSI-Articulos-Arodriguez-0003 http://e-spacio.uned.es/fez/view/bibliuned:DptoICyF-ETSI-Articulos-Arodriguez-0003
DOI - identifier	10.3390/ma11081449
ISSN - identifier	1996-1944
Nombre de la revista	Materials
Número de Volumen	11
Número de Issue	8
Publicado en la Revista	Materials 2018, 11(8)
Idioma	eng
Versión de la publicación	submittedVersion
Tipo de recurso	Article
Derechos de acceso y licencia	http://creativecommons.org/licenses/by-nc-nd/4.0 info:eu-repo/semantics/openAccess
Tipo de acceso	Acceso abierto
Notas adicionales	The registered version of this article, first published in materials, is available online at the publisher's website: MDPI, https://doi.org/10.3390/ma11081449

Tipo de documento:	Artículo de revista
Collections:	Departamento de Ingeniería de Construcción y Fabricación (UNED). Artículos Set de artículo Set de openaire

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Analysis of Favourable Process Conditions for the 2 Manufacturing of Thin-Wall Pieces of Mild Steel 3 Obtained by Wire and Arc Additive Manufacturing 4 (WAAM)