Journal
MATERIALS TODAY COMMUNICATIONS
Volume 37, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mtcomm.2023.106978
Keywords
Cast; Nanocomposites; Microstructure; Electron microscopy; Mechanical properties
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In this study, Aluminium-Silicon grade LM30 nanocomposites were manufactured using ultrasonic squeeze-assisted stir casting. The addition of Boron Carbide nanoparticles improved the material's properties, resulting in higher hardness, tensile strength, compressive strength, and impact strength.
In this work, Aluminium-Silicon grade LM30 nanocomposites were fabricated through ultrasonic squeezeassisted stir casting. Five formulations were made by varying the weight percentage of Boron Carbide nanoparticles (nB4C) from 0 to 2.0 wt% in steps of 0.5 wt%. The formulation's microstructure, hardness, tensile, compression, and impact strength properties were evaluated. X-ray diffraction technique was used to study the presence of aluminium, silicon, and boron carbide compounds. The fractured surfaces from the tensile tests were investigated using FESEM for fractography analysis. The ultrasonic vibration employed during manufacturing aided homogeneous nanoparticle distribution and helped to refine the microstructure. The results indicated that the LM30 nanocomposite with 1 wt% nB4C enhanced the hardness, tensile strength, and compressive strength. Also, adding nB4C particles provided excellent resilience in absorbing the impact energy.
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