The Effect of Aluminum Content on TiO₂ Coated Carbon Fiber Reinforced Magnesium Alloy Composites

Abstract:

The interface between the reinforcement and the matrix is significant to metal matrix composites. The effect of aluminum (Al) content on interfacial microstructure and mechanical properties of TiO₂ coated carbon fiber reinforced magnesium matrix composites by squeeze casting technique have been studied (C/Mg). Mg-2wt%Al and AZ91D were used as alloy matrix. The obtained results indicate that the carbon fibers in both kinds of composites are well protected by TiO₂ coating, without any interfacial brittle carbide phase observed. The flexural strength of C_f-TiO₂/AZ91D (1009MPa) composites is 26.5% lower than that of C_f-TiO₂/Mg-2Al (1277MPa) composites. The lath-shaped precipitates of Mg₁₇Al₁₂ in AZ91D composites lead to the mechanical properties decrease.

• Periodical: Applied Mechanics and Materials (Volumes 488-489)
• Pages: 30-35
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.488-489.30
• Online since: January 2014
• Authors: Cun Juan Xia*, Ming Liang Wang, Hao Wei Wang, Cong Zhou
• Keywords: Carbon Fiber (CF), Composite, Magnesium Alloy

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