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Tiago, Cadavez, Ferreira Sónia, Medeiros Pedro, Quaresma Paulo, Rocha Luís, Velhinho Alexandre, and Vignoles Gérard. "A Graphical Tool for the Tomographic Characterization of Microstructural Features on Metal Matrix Composites." Int. J. of Tomography. & Statistics. 14 (2010): 3-15. Abstract

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Velhinho, A., and Ferreira Rocha Vignoles Cloetens S. C. L. A. Braz Fernandes, F.M. "Application of X-ray microtomography to the microstructural characterization of Al-based functionally graded materials." Adv. in Sci. & Technol.. 45 (2006): 1109-1116. Abstract

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Velhinho, Alexandre, F. M. Braz Fernandes, and J. D. Botas. "Microstructural study of aluminium-matrix composites reinforced with SiC." Advanced Materials Forum I. Vol. 230-2. Key Engineering Materials, 230-2. 2002. 226-230. Abstract01_-_key_eng._mater._230-232_2002_226-230.pdf

Rheocasting, as a semi-solid process, allows the production of aluminium matrix composites at relatively low temperatures (ca. 580ºC), thus favouring a reduced reactivity at the reinforcement-metal matrix interface. When one considers the possibility of further processing (such as any treatment involving remelting, even if partial) of the material, this trait allows a more rigorous control of the interfaces. Composite samples have been produced using as matrix an Al-7Si-0.3Mg alloy reinforced with SiCp (granulometry: 120 μm; Vr = 0.30). These were rheocast at 583ºC, followed by forging and subsequent water-quenching. A structural characterisation (optical microscopy and XRD) of the as-received matrix material, as well as of the reinforced and non-reinforced rheocast material was performed. The phases identification will provide a basis for the understanding of the further processing where the rheocast material will be used as a raw material to produce functionally graded metal-matrix composites by centrifugal casting.