Investigations on Mechanical Behaviour of B4C and MoS2 Reinforced AA2024 Hybrid Composites

• Published in: Journal for Manufacturing Science and Production 2015-12, Vol.15 (4), p.339-343
• Main Authors: Rebba, Bhargavi, Ramanaiah, N.
• Format: Article
• Language: English
• Subjects: 81.05.Mh; Alloys; Aluminum; Composite materials; Constituents; Engineering schools; hybrid composites; Mechanical properties; Microstructure; Molybdenum; MoS; Solid lubricants; Tensile strength
• ISSN: 2191-4184; 0793-6648; 2191-0375
• DOI: 10.1515/jmsp-2015-0001

The results of an experimental investigation of the mechanical properties of boron carbide (B C) and molybdenum disulphide (MoS ) reinforced aluminium alloy (AA2024) hybrid composite samples, processed by stir casting process are reported in this paper. Based on the previous studies, it was concluded that for 4% of weight of the B C powders reinforced in AA2024 metal matrix have better mechanical properties like tensile strength and hardness than the base alloy. Also the 4% of MoS reinforced in AA2024 metal matrix exhibited good mechanical properties than the matrix metal. Hence an attempt has been made to further improve the properties of the composite using both B C and MoS as reinforcement particles in the AA2024 matrix. in the present study hybrid composite specimen were developed varying the weight% of B C and MoS , viz., 1%+3%, 2%+2%, 3%+1% B C and MoS respectively in the AA2024 matrix. The prepared samples were subjected to a series of mechanical tests like tensile and hardness tests. Further, SEM & XRD analyses were performed on the prepared samples to study the microstructure and to ensure the proper dispersion of the reinforced particles in the metal matrix.