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Microstructure and mechanical properties of magnesium composites prepared by spark plasma sintering technology

Wan Muhammad, Wan Nur Azrina and Sajuri, Zainuddin and Mutoh, Yoshiharu and Miyashita, Yukio (2011) Microstructure and mechanical properties of magnesium composites prepared by spark plasma sintering technology. Journal of Alloys and Compounds, 509. ISSN 09258388

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Spark plasma sintering (SPS) technology was used to determine the appropriate conditions for SPS sintering of commercially pure magnesium as well as the magnesium alloy AZ31. It was found that the sintering temperatures of 585 ◦C and 552 ◦C were the most suitable sintering temperatures for the magnesium and the AZ31 alloy, respectively. Magnesium matrix and AZ31 alloy matrix composites reinforced with SiC particles were then successfully fabricated by the SPS method at sintering temperatures of 585 ◦C and 552 ◦C, respectively. A uniform distribution of SiC particles was observed along the boundary between matrix particles. The mechanical properties, i.e. hardness and tensile strength increased with increasing SiC content up to 10 wt%. However, when the SiC content was larger than 10 wt%, the tensile strength decreased due to the agglomeration of SiC particles. The agglomeration of SiC particles was found to lead to the degradation of the interfacial bonding strength between matrix and reinforcement.

Item Type: Article
Uncontrolled Keywords: composite material; magnesium; AZ31 alloy; SiC particle; powder metallurgy; spark plasma sintering; mechanical properties
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Materials Engineering and Design
Depositing User: En. Muhamad Saufi Che Rusuli
Date Deposited: 04 Mar 2013 04:36
Last Modified: 04 Mar 2013 04:36
URI: http://eprints.uthm.edu.my/id/eprint/3100
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