Influence of stirring speed on stir casting of SiC reinforced Al Mg Cu composite

• Published in: Materials today : proceedings Vol. 45; pp. 5899 - 5902
• Main Authors: Tamilanban, T., Ravikumar, T.S.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-01-2021
• Subjects: Aluminium MMCs; Mechanical properties; SiC; Stir casting; Stirring speed; Mechanical properties; Stirring speed; SiC; Stir casting; Aluminium MMCs
• ISSN: 2214-7853; 2214-7853
• DOI: 10.1016/j.matpr.2020.08.633

The present study aims to evaluate mechanical properties, wear and microstructure behaviour of aluminum metal matrix composite fabricated using Al 6061 alloy with inclusion of 12% silicon carbide, 4% magnesium and 2% copper content. The tensile strength, hardness and wear test of the fabricated components are investigated as a function of different stirring speed while stir casting. Microstructure analysis were analysed in cast components using optical and scanning electron microscope. The wear behaviour of aluminium metal matrix composite was performed with a pin on disk apparatus. The distribution of reinforcing particles and alloying elements were observed including dendrites, effectively dependent on stirring speed while casting. The results revealed that change in stirring speed while addition of magnesium and copper alloying element with aluminium SiC composite has significant effect in strength, hardness and friction coefficient. The SiC particles dissipate more efficiently at 700 RPM stirring speed homogeneously with Al Mg Cu matrix. The SiC reinforcement distribution is enhanced by addition of magnesium which increases the wettability.