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Research Article
Mechanical characterization of alumina and graphite dual particulates reinforced hybrid aluminum alloy (Al2219) matrix composites
ShivaPrakash S1, Santosh Kumar2, Naveen Kumar B K3, Madeva Nagaral4, Narasimha Marakal5, V Auardi6, Manjunatha T H7, Dileep B. P8
1Department of Mechanical Engineering, New Horizon College of Engineering, Bangalore-560103, India
2Department of Industrial and Production Engineering, The National Institute of Engineering, India
3Department of Mechanical Engineering, M S Ramaiah Institute of Technology, Bengaluru, India
4Aircraft Research and Design Centre, Hindustan Aeronautics Limited, Bangalore-560037, Karnataka, India
5Department of Mechanical Engineering, Nitte (Deemed to be University) NMAM Institute of Technology, Nitte, Karkala, Udupi-574110, Karnataka, India
6Department of Mechanical Engineering, Siddaganga Institute of Technology, Tumkur-572103, India
7Department of Mechanical Engineering, Ballari Institute of Technology and Management, Ballari-583104, Karnataka, India
8Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Bangalore, 560035, India
Keywords
Abstract
Al2219 alloy;
Graphite particles hybrid composite;
Microstructure;
Mechanical behavior
The current study involved the production of hybrid composites employing a liquid metallurgical technique, combining Al2219 alloy with Al2O3 and graphite. The Al2219 alloy was employed to fabricate hybrid composites consisting of Al2O3 particles, ranging from 3 to 6 weight percent, and a constant 2 weight percent of graphite particles. The generated composites underwent microstructural investigation using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The density, hardness, ultimate strength, yield strength, and elongation were determined according to ASTM standards. The SEM revealed that both graphite and Al2O3 particles were uniformly distributed within the Al2219 alloy. The EDS revealed the presence of hybrid particles in the Al2219 alloy. The incorporation of dual particles into the matrix resulted in a decrease in the density of aluminium alloy composites. The incorporation of dual particles enhanced the hardness of Al2219 alloy by 22%, ultimate strength by 36.7%, and yield strength 38.5%. The EDS results indicated that the Al2219 alloy contains hybrid particles. The incorporation of dual particles into the matrix resulted in a decrease in the density of aluminium alloy composites. The unique fracture characteristics of the Al2219 alloy and its composites were further demonstrated through the use of tensile force micrographs.
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