Mechanical behavior and microstructure properties of titanium powder consolidated by high-pressure torsion

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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	Zhilyaev, A. P.
dc.contributor.author	Ringot, Geoffrey
dc.contributor.author	Huang, Yi
dc.contributor.author	Cabrera Marrero, José M.
dc.contributor.author	Langdon, T. G.
dc.date	2017-03
dc.identifier.citation	Zhilyaev, A., Ringot, G., Huang, Y., Cabrera, J., Langdon, T. Mechanical behavior and microstructure properties of titanium powder consolidated by high-pressure torsion. "Materials science and engineering A. Structural materials properties microstructure and processing", Març 2017, vol. 688, p. 498-504.
dc.identifier.citation	0921-5093
dc.identifier.citation	10.1016/j.msea.2017.02.032
dc.identifier.uri	http://hdl.handle.net/2117/102389
dc.language.iso	eng
dc.relation	http://www.sciencedirect.com/science/article/pii/S0921509317301892
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	Titanium powder
dc.subject	High-pressure torsion
dc.subject	Mechanical properties
dc.subject	Microstructure
dc.subject	Titanium powder
dc.subject	Pulverimetal·lúrgia
dc.subject	Titani -- Propietats mecàniques
dc.title	Mechanical behavior and microstructure properties of titanium powder consolidated by high-pressure torsion
dc.type	info:eu-repo/semantics/submittedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Research was conducted to investigate the potential for consolidating titanium powder using high-pressure torsion (HPT) at room temperature. The nanostructured samples processed by HPT were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results show there is a significant refinement of the Ti powder and it consolidates into bulk nanostructured titanium with a mean grain size estimated by TEM as ~200–300 nm and a mean crystallite size measured by XRD as ~20–30 nm. Microhardness measurements and tensile testing show high strength and low ductility after consolidation under a pressure of 6.0 GPa for 5 revolutions. Additional short annealing at a temperature of 300 °C for 10 min leads to a significant enhancement in ductility while maintaining the high strength.
dc.description.abstract	Peer Reviewed

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