Technical Session - 3

Title:          Development of Aluminium Based Hybrid (AA5083/FLYASH/SiCp) MMCs for Ship Building Applications
Authors:     Tushar Soni, S. Manish, V. K. Harshavardhan, Sandeep Ramini, Rudranaik M., Avinash L., Muralidhar Avvari
Abstract:     In this investigation, A5083(Al-0.4%Si-4.5%Mg-0.4%Fe-0.4%Mn) alloy/Fly ash/SiCp Hybrid composites with various weight fractions of fly ash and SiCp were prepared by using electromagnetic stir casting process. Microstructure, hardness, tensile, compression and impact test properties of these composites were evaluated and compared with as-cast alloy. In addition, tribological properties of these composites were evaluated using a Pin-on-Disc apparatus at a constant sliding velocity of 2m/s and pressure of 0.35 MPa. Microstructural observation suggests that electromagnetic stirring action produces cast high performance hybrid Aluminium 5083/Fly ash/SiCp MMC with smaller grain size and there is a good particulate matrix interface bonding. The mechanical properties of composites increased with increasing the weight percentage of fly ash and SiCp upto certain percentage and then decreased. The present paper highlights the salient features of casting technique and characterization of aluminium alloy A5083 and alumina metal matrix composite.

Keywords:  A5083, Permanent Mould Casting, Sliding Velocity, Reinforcement, Microstructure, Tribology
Pages:        192-196

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