Local Strengthening of EN AC-44200 Al Alloy with Ceramic Fibers

Abstract:

The applied squeeze casting technique makes possible the local strengthening with ceramic fibers or ceramic particles of elements with Al-alloy matrices. In this paper the elaborated technology of manufacturing of porous ceramic preforms from Saffil fibers is shown and technology of squeeze casting elaborated at Wrocław University of Technology, Chair Foundry, Polymers and Automation described. There were applied the preforms characterized by porosities of 90% and 80%, what after squeeze casting with liquid EN AC - 44200 Al alloy produces the composite materials containing 10 vol. and 20 vol.% of fiber strengthening. The structural phenomena at the interface of strengthened alloy investigated with the optical and electron microscopy are discussed and the mechanical properties of manufactured composite materials are shown.

• Periodical: Key Engineering Materials (Volume 662)
• Pages: 237-240
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.662.237
• Online since: September 2015
• Authors: Krzysztof Naplocha, Jacek W. Kaczmar, Jerzy Morgiel
• Keywords: Aluminium Alloy, Ceramic Preforms, Composite Material, Squeeze Casting

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