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CSME 2020/08
Volume 41 No.4
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503-511
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Experimental Investigations on Microstructure, Mechanical and Wear Behaviours of Al 7075-Boron Carbide-Cow Dung Ash Hybrid Metal Matrix Composites
Manikandan Rajan a and Arjunan Thottipalayam Vellingri b
aDepartment of Mechanical Engineering, Sri Ramakrishna Institute of Technology, Coimbatore – 641 010, INDIA.
bDepartment of Mechanical Engineering, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur 495009, Chhattisgarh, INDIA.
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Abstract:
This work focuses on the effects of reinforcements in microstructure, mechanical and wear properties when compared to aluminium 7075. Stir casting technique was used were boron carbide (B4C) and cow dung ash (CDA) are reinforced by varying their percentage. Micro structural analyses were investigated by optical microscope. Mechanical and wear testing was carried out and fracture mechanisms for tensile and wear were analysed by scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX). Micro structural images reveal uniform distribution of reinforcements in the matrix. The mechanical and wear properties have increased in addition of B4C - CDA particles in the matrix. Dimples, transgranular cleavage facets and micro ploughing, micro cuttings are revealed from the fractured specimens of tensile and wear respectively.
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Keywords: hybrid aluminium metal matrix, Microstructure, Mechanical and wear properties.
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©
2020
CSME , ISSN 0257-9731
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