Synthesis of Al7475-B 4 C Nano Composites: Evaluation of Wear Behavior at Elevated Temperatures

Abstract The current work focusses on using a liquid metallurgical process to fabricate Al7475 alloy with B4C particles that range in size from 400 to 500 nm. The Al7475 alloy was used to create composites with B4C particles at weight percentages of 2, 4, 6, 8, and 10. SEM and EDS were used to characterize the synthesized composites' microstructure. Hardness and density were measured using ASTM guidelines. Furthermore, wear tests with varying loads and velocities were conducted at room temperature (RT) and elevated temperatures of 50˚C, and 100˚C. The B4C particles were equivalently disseminated throughout the Al7475 alloy, according to SEM micrographs. EDS spectra shows the occurrence of B4C in the Al7475 alloy. Dual particles added to the matrix reduced the density of Al7475 composites. The Al7475 alloy with B4C composites demonstrated better hardness and wear characteristics at room temperature and at higher temperatures.