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Influence of process parameters and initial microstructure on the oxidation resistance of Ti48Al2Cr2Nb coating obtained by laser metal deposition

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Influence of process parameters and initial microstructure on the oxidation resistance of Ti48Al2Cr2Nb coating obtained by laser metal deposition

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dc.contributor.author Zambrano Carrullo, Jenny Cecilia es_ES
dc.contributor.author Pereira Falcón, Juan Carlos es_ES
dc.contributor.author Amigó, Vicente es_ES
dc.date.accessioned 2019-05-29T20:42:47Z
dc.date.available 2019-05-29T20:42:47Z
dc.date.issued 2019 es_ES
dc.identifier.issn 0257-8972 es_ES
dc.identifier.uri http://hdl.handle.net/10251/121268
dc.description.abstract [EN] Ti6Al4V have been the most important and versatile titanium alloys currently used, due to their excellent combination of low density and good mechanical properties, despite their application temperature being limited to up to 300 °C. In this work, a Ti6Al4V sheet was coated with a Ti48Al2Cr2Nb alloy by laser cladding process, with the process parameters resulting in laser-specific energy densities of 70, 80, 90 and 180 J/mm2, laser power between 600 and 900W and scanning speed of 100 to 300 mm/min. In order to analyze the oxidation resistance at elevated temperature, isothermal oxidation tests were carried out at 800 °C for 5, 10, 25, 50, 100 and 150 h in static air. The oxidized samples were characterized by optical microscopy (OM), scanning electron microscopy (SEM), field emission microscopy (FESEM) with energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD) analysis. Two groups of coatings with similar microstructures were obtained, and their influence on the formation of thermally oxidized growth layers was studied. From the isothermal oxidation tests, it was observed that the Ti48Al2Cr2Nb coatings have good resistance to oxidation in air at 800 °C in comparison with the Ti6Al4V substrate by obtaining layers of oxides up to 12 ¿m thick after 150 h of oxidation. The structure of the oxide layers is complex and comprises the growth of successive layers from the outer surface of the coating. The effect of the microstructure of the coating on the density of the oxide layer formed was evaluated. es_ES
dc.description.sponsorship The authors would like to thank the Ministerio de Ciencia e Innovacion of the Spanish Government for their financial support through research project MAT2011-28492-C03 and the Generalitat Valenciana through grant ACOMP/2014/151. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Surface and Coatings Technology es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject TiAl es_ES
dc.subject Coating es_ES
dc.subject High-temperature es_ES
dc.subject Oxidation es_ES
dc.subject Laser metal deposition es_ES
dc.subject.classification CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA es_ES
dc.title Influence of process parameters and initial microstructure on the oxidation resistance of Ti48Al2Cr2Nb coating obtained by laser metal deposition es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.surfcoat.2018.11.015 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//ACOMP%2F2014%2F151/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MICINN//MAT2011-28492-C03-01/ES/CARACTERIZACION DE RECUBRRIMIENTOS DE BARRERA TERMICA OBTENIDOS POR LASER/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Tecnología de Materiales - Institut de Tecnologia de Materials es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials es_ES
dc.description.bibliographicCitation Zambrano Carrullo, JC.; Pereira Falcón, JC.; Amigó, V. (2019). Influence of process parameters and initial microstructure on the oxidation resistance of Ti48Al2Cr2Nb coating obtained by laser metal deposition. Surface and Coatings Technology. 358:114-124. https://doi.org/10.1016/j.surfcoat.2018.11.015 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.surfcoat.2018.11.015 es_ES
dc.description.upvformatpinicio 114 es_ES
dc.description.upvformatpfin 124 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 358 es_ES
dc.relation.pasarela S\372742 es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Ministerio de Ciencia e Innovación es_ES


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