60903 20170503142842.0 doi 10.1016/j.jeurceramsoc.2013.03.033 sideral 82811 ART-2013-82811 eng Pastor, J.Y. Superplastic deformation of directionally solidified nanofibrillar Al2O3-Y3Al5O12-Zr O2 eutectics 2013 Access copy available to the general public Unrestricted Nanofibrillar Al2O3–Y3Al5O12–ZrO2 eutectic rods were manufactured by directional solidification from the melt at high growth rates in an inert atmosphere using the laser-heated floating zone method. Under conditions of cooperative growth, the ternary eutectic presented a homogeneous microstructure, formed by bundles of single-crystal c-oriented Al2O3 and Y3Al5O12 (YAG) whiskers of ˜100 nm in width with smaller Y2O3-doped ZrO2 (YSZ) whiskers between them. Owing to the anisotropic fibrillar microstructure, Al2O3–YAG–YSZ ternary eutectics present high strength and toughness at ambient temperature while they exhibit superplastic behavior at 1600 K and above. Careful examination of the deformed samples by transmission electron microscopy did not show any evidence of dislocation activity and superplastic deformation was attributed to mass-transport by diffusion within the nanometric domains. This combination of high strength and toughness at ambient temperature together with the ability to support large deformations without failure above 1600 K is unique and shows a large potential to develop new structural materials for very high temperature structural applications. info:eu-repo/grantAgreement/ES/MINECO/MAT2009-13979 info:eu-repo/grantAgreement/EUR/NMP4-SL-2008-213669-ENSEMBLE info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 2.307 2013 MATERIALS SCIENCE, CERAMICS 2 / 25 = 0.08 2013 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Martín, A. Molina-Aldareguía, J.M. LLorca, J. (orcid)0000-0003-3480-398X Oliete, P.B. Universidad de Zaragoza (orcid)0000-0002-0809-641X Larrea, A. Universidad de Zaragoza (orcid)0000-0003-2242-6822 Peña, J.I. Universidad de Zaragoza (orcid)0000-0001-9690-9064 Orera, V.M. (orcid)0000-0002-2071-9093 Arenal, R. 5001 065 Universidad de Zaragoza Departamento de Ciencia y Tecnología de Materiales y Fluidos Ciencia de los Materiales e Ingeniería Metalúrgica 33, 13-14 (2013), 2579-2586 J. Eur. Ceram. Soc. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 0955-2219 1743686 http://zaguan.unizar.es/record/60903/files/texto_completo.pdf Postprint 88725 http://zaguan.unizar.es/record/60903/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:60903 articulos driver 2017-05-03-14:22:41 ARTICLE