TITLE:
Microstructural and Mechanical Characterization of Chicken Eggshell-Reinforced Al6061 Matrix Composites
AUTHORS:
Surendra Kumar Dwiwedi, Ashok Kumar Srivastava, Koh-ichi Sugimoto, Manoj Chopkar
KEYWORDS:
MMCs, Al6061, Eggshell, Stir Casting
JOURNAL NAME:
Open Journal of Metal,
Vol.8 No.1,
March
27,
2018
ABSTRACT: Chicken eggshell (ES) is an aviculture byproduct that has been used as the reinforcement in the present study which is recorded worldwide as one of the vilest environmental problems. The present work deals with development of ES-reinforced Al6061 matrix composites by stir-casting process with 0 to 10 wt% of reinforcement at an interval of 2 wt%. The microstructures of the fabricated composites were examined by optical and scanning electron microscopes with energy dispersive spectrometer (SEM/EDS). Optical micrographs divulge the uniform distribution of reinforcing particles in the matrix while X-ray diffraction (XRD) patterns ensure the dispersion of ES particles reinforcement in Al6061 matrix. The properties measured include density, tensile strength and hardness values. The tensile strength and hardness of composites increase with the addition of ES particles and the maximum values were achieved at 4 wt%. Further increase of ES particles in the matrix leads to decrease in hardness and strength owing to increase in porosity.