Wilkes, T. E. and Pastor, J. Y. and Llorca, J. and Faber, K. T. (2008) Mechanical properties of wood-derived silicon carbide aluminum-alloy composites as a function of temperature. Journal of Materials Research, 23 (6). pp. 1732-1743. ISSN 0884-2914. doi:10.1557/JMR.2008.0197. https://resolver.caltech.edu/CaltechAUTHORS:20140715-095121590
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Abstract
The mechanical behavior [i.e., stiffness, strength, and toughness (K_(IC))] of SiC Al–Si–Mg metal–ceramic composites (50:50 by volume) was studied at temperatures ranging from 25 to 500 °C. The SiC phase was derived from wood precursors, which resulted in an interconnected anisotropic ceramic that constrained the pressure melt-infiltrated aluminum alloy. The composites were made using SiC derived from two woods (sapele and beech) and were studied in three orthogonal orientations. The mechanical properties and corresponding deformation micromechanisms were different in the longitudinal (LO) and transverse directions, but the influence of the precursor wood was small. The LO behavior was controlled by the rigid SiC preform and the load transfer from the metal to the ceramic. Moduli in this orientation were lower than the Halpin–Tsai predictions due to the nonlinear and nonparallel nature of the Al-filled pores. The LO K_(IC) agreed with the Ashby model for the K_(IC) contribution of ductile inclusions in a brittle ceramic.
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Additional Information: | © 2008 Materials Research Society. Received 16 January 2008; accepted 3 March 2008. The financial support from the National Science Foundation through grants DMR-0244258/0710630, from the Ministerio de Educación y Ciencia through grant MAT2007-29278-E, and from the Comunidad de Madrid through the Materiales Estructurales Avanzados ESTRUMAT program (S-0505/MAT-0077) is gratefully acknowledged. | ||||||||||
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Subject Keywords: | Composite; Elastic properties; Fracture | ||||||||||
Issue or Number: | 6 | ||||||||||
DOI: | 10.1557/JMR.2008.0197 | ||||||||||
Record Number: | CaltechAUTHORS:20140715-095121590 | ||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140715-095121590 | ||||||||||
Official Citation: | T.E. Wilkes, J.Y. Pastor, J. Llorca and K.T. Faber (2008). Mechanical properties of wood-derived silicon carbide aluminum-alloy composites as a function of temperature. Journal of Materials Research, 23, pp 1732-1743. doi:10.1557/JMR.2008.0197. | ||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||
ID Code: | 47214 | ||||||||||
Collection: | CaltechAUTHORS | ||||||||||
Deposited By: | Tony Diaz | ||||||||||
Deposited On: | 15 Jul 2014 19:15 | ||||||||||
Last Modified: | 10 Nov 2021 17:36 |
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