http://old.e-spacio.uned.es/fez/ Universidad Nacional de Educación a Distancia sp Fez 2.1 RC3 http://blogs.law.harvard.edu/tech/rss http://old.e-spacio.uned.es/fez/view/bibliuned:DptoICyF-ETSI-Articulos-Arodriguez-0003 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. 2024-01-30T09:17:56Z Prado-Cerqueira, José Luis og Diéguez, José Luis og Rodríguez-Prieto, Álvaro og María Aragón, Ana og Lorenzo-Martín, Cinta og Yanguas-Gil, Ángel http://old.e-spacio.uned.es/fez/view/bibliuned:20393 2008-06-19T20:38:07Z Moro Berihuete, Pilar og Cabero Pérez, Mariví og Rodríguez Diéguez, José Luis http://old.e-spacio.uned.es/fez/view/bibliuned:EducacionXXI-C3E3D4A4-6FBD-B9C5-3DDA-335804C94855 2008-04-14T03:45:44Z Rodríguez Diéguez, José Luis http://old.e-spacio.uned.es/fez/view/bibliuned:20274 2008-06-13T20:41:14Z Sánchez Sánchez, Serafín og Beltrán de Tena, Rosario og Bolívar Botía, Antonio og Rodríguez Conde, María José og Rodríguez Diéguez, José Luis http://old.e-spacio.uned.es/fez/view/bibliuned:20262 2008-06-13T18:56:44Z Roda Salinas, Fernando Jesús og Rodríguez Diéguez, José Luis og Quintero Gallego, Anunciación og Beltrán de Tena, Rosario og Clemente Linuesa, María http://old.e-spacio.uned.es/fez/view/bibliuned:20471 2008-06-24T19:32:38Z Rodríguez Diéguez, José Luis http://old.e-spacio.uned.es/fez/view/bibliuned:20321 2008-06-16T21:56:32Z Roda Salinas, Fernando Jesús og Martínez de la Fuente, Emigdio og Rodríguez Diéguez, José Luis http://old.e-spacio.uned.es/fez/view/bibliuned:20354 2008-06-17T21:46:17Z Rodríguez Diéguez, José Luis http://old.e-spacio.uned.es/fez/view/bibliuned:20237 2008-06-12T22:05:40Z Herrera García, Esperanza og Sánchez Gómez, María Cruz og Rodríguez Diéguez, José Luis http://old.e-spacio.uned.es/fez/view/bibliuned:20267 2008-06-13T19:25:00Z Roda Salinas, Fernando Jesús og Martínez de la Fuente, Emigdio og Rodríguez Diéguez, José Luis