Consolidation of AA7075-2wt%ZrO2 composite powders by severe plastic deformation via ECAP

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dc.contributor	Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.contributor	Universitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
dc.contributor.author	Hernadez-Martinez, S. E.
dc.contributor.author	Cruz-Rivera, J. J.
dc.contributor.author	Martinez-Sanchez, R.
dc.contributor.author	Garay Reyes, C. G.
dc.contributor.author	Muñoz Bolaños, Jairo Alberto
dc.contributor.author	Cabrera Marrero, José M.
dc.contributor.author	Hernandez Rivera, J. L.
dc.date	2016-10
dc.identifier.citation	Hernadez-Martinez, S., Cruz-Rivera, J. J., Martinez-Sanchez, R., Garay , C., Muñoz, J., Cabrera, J., Hernandez, J. Consolidation of AA7075-2wt%ZrO2 composite powders by severe plastic deformation via ECAP. "Acta Metallurgica Sinica-English Letters", Octubre 2016, vol. 29, núm. 10, p. 895-901.
dc.identifier.citation	1006-7191
dc.identifier.citation	10.1007/s40195-016-0477-z
dc.identifier.uri	http://hdl.handle.net/2117/102387
dc.language.iso	eng
dc.relation	http://link.springer.com/article/10.1007%2Fs40195-016-0477-z
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria dels materials
dc.subject	Deformations (Mechanics)
dc.subject	Metal matrix composites (MMCs)
dc.subject	Powder consolidation
dc.subject	Severe plastic deformation (SPD)
dc.subject	Deformacions (Mecànica)
dc.subject	Metal·lúrgia
dc.title	Consolidation of AA7075-2wt%ZrO2 composite powders by severe plastic deformation via ECAP
dc.type	info:eu-repo/semantics/submittedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	The powders of the AA 7075-ZrO2 were mixed by mechanical milling, but it was found that the system presents a few disadvantages when processed by conventional sintering and hot extrusion, since intermetallic phases between ZrO2 particles and alloying elements were formed. Equal channel angular pressing (ECAP) processing was proposed as an alternative method to consolidate the composite where there is no intermetallic formation. The analysis of the ECAP process showed that the intermediate temperature (220 °C) produced a higher consolidation level than conventional sintering and hot extrusion (400 and 500 °C, respectively). This fact was supported by relative density analysis. In the case of the sintered and hot-extruded sample, the relative density exhibited a value of 0.95, while ECAP sample showed a value of 0.98. Hardness values show that microstructural refinement obtained during mechanical milling was preserved during ECAP processing even when it was carried out at 220 °C.
dc.description.abstract	Peer Reviewed

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