THE STUDY OF SAND ABRESIVE WERA BEHAVIOUR OF FORGED Al7075-AlN COMPOSITES
Annapoorna T L 1, Batluri Tilak Chandra2, SanjeevaMurthy3, H S Shivashankar4 1Research scholar, Sri Sidhartha Institute of Techanology, Tumkur, annapoornatl@ssit.edu.in
2Assistant Professor, Sri Sidhartha Institute of Techanology, Tumkur. batluritilakchandra@ssit.edu.in
3Professor, Sri Sidhartha Institute of Techanology,Tumkur. sanjeevamurthy@ssit.edu.in
4 Assosiate Professor,Sri Siddaganga Institute of Technology,Tumkur. hssmed_sit@yahoo.com
Abstract
The Al7075 alloy reinforced Aluminium Nitride composites was processed by vortex method, which were then hot forged at a temperature of 440ºC. The continual deformation ratio is set at 2:1. After being hot forged, the Al7075 alloy and Al7075-AlN composites undergo a two-hour solutionizing process at 420°C, followed by ice quenching. The quenched samples were aged naturally and artificially at 120°C for a total of 8 hours. Both matrix alloy and produced composites had their microstructure, micro hardness, and dry sand abrasive wear behaviour assessed in their forged and heattreated states. Scanning electron microscopes have been used to conduct investigations on worn surfaces. Results showed that the matrix alloy’s AlN particles are evenly dispersed. Al7075-AlN composites’ micro hardness rises when the percentage of reinforcement is increased. When compared to composites that were cast as is, heat-treated forged alloy and its composites are harder. Comparing forged Al7075-AlN composites to the Al7075 matrix alloy, lower abrasive wear loss was seen. As-forged Al7075 alloy and Al7075-AlN composites’ abrasive wear resistance is significantly impacted by heat treatment.
KEYWORDS: solutionizing temperature, ageing process, forging.