Abstract
Investigation of mechanical and tribological properties of A356 alloy reinforced with Al2O3 nano (average size 30 nm) and MoS2 micro-particles (10 µm) are presented in this study. The percentage of Al2O3 was constant (1 wt%) and MoS2 varied from 0.5 to 2 wt% with the interval of 0.5%. The ceramic particles were added when stirring at 300 rpm and 800 °C with squeeze casting pressure of 43 MPa in stir and squeeze casting machine. Characterization of A356/Al2O3/MoS2 hybrid composites were conducted and Tribology studies on the samples were also investigated at 10, 30 and 50 N load, sliding speed of 1.3 m/s and sliding distance of 1100 m in dry condition. Microstructure analysis of the composite showed that the Al2O3 (1 wt%) and MoS2 (0.5 and 1%) particles were dispersed uniformly in the A356 alloy matrix. Partial agglomeration was observed in the synthesized metal-matrix composite (MMC) with higher MoS2 (2%) and Al2O3 (1%). The MMC containing 0.5 and 1 wt% of MoS2 and Al2O3 (1 wt%) exhibited the higher bending strength, lesser wear, and coefficient of friction.
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Sekar, K., Manohar, M., Jayakumar, K. (2019). Mechanical and Tribological Properties of A356/Al2O3/MoS2 Hybrid Composites Synthesized Through Combined Stir and Squeeze Casting. In: Lakshminarayanan, A., Idapalapati, S., Vasudevan, M. (eds) Advances in Materials and Metallurgy. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-1780-4_13
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DOI: https://doi.org/10.1007/978-981-13-1780-4_13
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