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Stir casting process for manufacture of Al–SiC composites

Soltani, S., Azari Khosroshahi, Rasoul and Brabazon, Dermot orcid logoORCID: 0000-0003-3214-6381 (2015) Stir casting process for manufacture of Al–SiC composites. Rare Metals . ISSN 1001-0521

Abstract
Stir casting is an economical process for the fabrication of aluminum matrix composites. There are many parameters in this process, which affect the final microstructure and mechanical properties of the composites. In this study, micron-sized SiC particles were used as reinforcement to fabricate Al-3 wt% SiC composites at two casting temperatures (680 and 850 C) and stirring periods (2 and 6 min). Factors of reaction at matrix/ceramic interface, porosity, ceramic incorporation, and agglomeration of the particles were evaluated by scanning electron microscope (SEM) and high-resolution transition electron microscope (HRTEM) studies. From microstructural characterizations, it is concluded that the shorter stirring period is required for ceramic incorporation to achieve metal/ceramic bonding at the interface. The higher stirring temperature (850 C) also leads to improved ceramic incorporation. In some cases, shrinkage porosity and intensive formation of Al4C3 at the metal/ceramic interface are also observed. Finally, the mechanical properties of the composites were evaluated, and their relation with the corresponding microstructure and processing parameters of the composites was discussed.
Metadata
Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:Aluminum matrix composite; Microstructure; Mechanical properties; Stir casting
Subjects:Engineering > Materials
Engineering > Mechanical engineering
DCU Faculties and Centres:Research Initiatives and Centres > Advanced Processing Technology Research Centre (APTRC)
Publisher:Maney Publishing (Springer)
Official URL:http://dx.doi.org/10.1007/s12598-015-0565-7
Copyright Information:© 2015 Springer
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:21108
Deposited On:29 Feb 2016 14:31 by Fran Callaghan . Last Modified 19 Sep 2018 15:12
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