Investigating of Wettability Modification Methods on Microstructure and Mechanical Properties of Silicon Carbide/ Aluminum Composite Produced by Stir Casting

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JAFARI NEGAR; SOLTANIEH MANSOUR

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Journal: FOUNDING RESEARCH JOURNAL Year:2019 | Volume:3 | Issue:1 Page(s): 21-28

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Information Journal Paper

Title

Investigating of Wettability Modification Methods on Microstructure and Mechanical Properties of Silicon Carbide/ Aluminum Composite Produced by Stir Casting

Author(s)

JAFARI NEGAR | SOLTANIEH MANSOUR | Issue Writer Certificate

Keywords

Composite

Silicon carbide-aluminum composite

Stir casting

SiC wettability

Abstract

The low cost Stir casting is one of the most applicable methods to fabricate Aluminum metal matrix Composites. In this study, Stir casting technique is utilized to produce Silicon carbide/Aluminum alloy Composite. To achieve a homogeneous and suitable distribution, reinforcing particle surface properties is investigated by applying various thermal and mechanical treatments. SiC Oxidation performed at 950˚ C for 1 hour and keeping at 650˚ C for 2 hours as heat treatment. Mechanical treatment comprised milling aluminum and SiC powder. 10% vol. fraction Silicon carbide particles with average size of 2, 10 and 40 microns were gradually added to the aluminum matrix stirring at 640˚ C. After stirring, the Composite was cast at 700˚ C in a steel mold. Observing the Composite microstructure using OM and SEM reveals that reinforcing particles are dispersed in the matrix. However, heat treated reinforcing particles at 950˚ C and keeping at 650˚ C leads to fabricate a more homogenous Composite of a specified percentage of reinforcing particles in which particles could be easily wetted by the matrix. In samples with SiC particles milled with Al powder, particles were not desirably bounded and disturbed in the matrix. Oxidation at 950˚ C and keeping at 650˚ C Shows better wettability and distribution of particles. This specimen also has the highest hardness of 139 HV, indicating the proper bonding of particles and their uniform distribution in the matrix.

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APA: Copy

JAFARI, NEGAR, & SOLTANIEH, MANSOUR. (2019). Investigating of Wettability Modification Methods on Microstructure and Mechanical Properties of Silicon Carbide/ Aluminum Composite Produced by Stir Casting. FOUNDING RESEARCH JOURNAL, 3(1 ), 21-28. SID. https://sid.ir/paper/265686/en

Vancouver: Copy

JAFARI NEGAR, SOLTANIEH MANSOUR. Investigating of Wettability Modification Methods on Microstructure and Mechanical Properties of Silicon Carbide/ Aluminum Composite Produced by Stir Casting. FOUNDING RESEARCH JOURNAL[Internet]. 2019;3(1 ):21-28. Available from: https://sid.ir/paper/265686/en

IEEE: Copy

NEGAR JAFARI, and MANSOUR SOLTANIEH, “Investigating of Wettability Modification Methods on Microstructure and Mechanical Properties of Silicon Carbide/ Aluminum Composite Produced by Stir Casting,” FOUNDING RESEARCH JOURNAL, vol. 3, no. 1 , pp. 21–28, 2019, [Online]. Available: https://sid.ir/paper/265686/en

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