Affiliation:
1. Government Polytechnic, Nagamangala, Mandya, Karnataka, India
Abstract
Aluminum MMCs are considered as conventional materials in the fields of aerospace, automotive and marine applications due to their improved properties like high strength to weight ratio, good wear resistance etc. Al2O3 can be considered as ideal reinforcements, because of their high strength, high aspect ratio and thermo-mechanical properties. The objective of this work is to reinforce Al2O3 particles with Al 1100 (Mg) alloy by melt stirring method. 0, 3, 6, 9 and 12 wt% of Al2O3 particles are added to Al 1100 (Mg) alloy to make aluminum based composites. Microstructural study using Scanning Electron Microscopy and Mechanical properties like tensile strength and hardness will be investigated for cast alloy composites. Variations in microstructures and mechanical properties in different wt% of Al2O3 particles have been compared with each other.
Reference14 articles.
1. The stir casting technique was successfully adopted in the preparation of alloy and composites containing 0, 3, 6, 9 and 12 wt% of Al2O3 powder reinforcement.
2. SEM analysis shows porosity in cast composites increases with increasing addition of Al2O3 powder, comparatively more dark spots observed at AMP12 composites.
3. The hardness and tensile strength of the composites is found to decrease beyond 6 wt% of Al2O3 due increased porosity and improper bonding between matrix and reinforcement particles.
4. Ghanaraja.S., Vinuth Kumar.K.L., Ravikumar. K.S. and Madhusudhan B. M. "Mechanical Properties of Al2O3 Reinforced Cast and Hot Extruded Al based Metal Matrix Composites”. Applied Mechanics and Materials Vols. 813-814 (2015) pp 208 - 212
5. P.B.Pawar, Abhay A. Utpat, Procedia Materials Science 6. ( 2014 ) 1150 – 1156