Type

Journal Article

Authors

Dermot Brabazon
R. Azari Khosroshahi
S. Soltani

Subjects

Engineering

Topics
mechanical properties materials composites aluminum matrix composite mechanical engineering microstructure stir casting high resolution

Stir casting process for manufacture of Al–SiC composites (2015)

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.
Collections Ireland -> Dublin City University -> Publication Type = Article
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> Subject = Engineering: Mechanical engineering
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: Advanced Processing Technology Research Centre (APTRC)
Ireland -> Dublin City University -> Subject = Engineering: Materials

Full list of authors on original publication

Dermot Brabazon, R. Azari Khosroshahi, S. Soltani

Experts in our system

1
Dermot Brabazon
Dublin City University
Total Publications: 162
 
2
R. Azari Khosroshahi
Dublin City University
Total Publications: 9