Nataraja M

and 3 more

The development of Al 12% Si-ZrO 2 composites using the Disintegrated Melt Deposition (DMD) technique, as well as the microstructure and mechanical characteristics of the resulting materials, are the main objectives of this work. The Al-12%Si alloy, which is well-known for its remarkable strength and resistance to corrosion, has potential uses in the shipbuilding and aircraft industries. Zirconia (ZrO 2) is a ceramic substance that can be used for a variety of applications due to its exceptional corrosion resistance and high hardness values. ZrO 2 adds strength and hardness to composite materials while decreasing percentage elongation and facilitating lubrication between the silicon and aluminum elements in the matrix alloy. The specimens with different weight percentages of ZrO 2 were exposed to DMD. They were identified as AS, AS0.5Z, AS1Z, AS1.5Z, AS2Z, AS2.5Z, and AS3Z. The findings showed that the hardness values increased from 59.7 BHN for as cast to 75.2 BHN for 2.5 wt. % ZrO 2, followed by a minor reduction for 3 wt. % ZrO 2. This rise occurred when the weight percentage of ZrO 2 grew from 0 to 3%. Accordingly, the percentage of elongation dropped from 12.3% to 8.5%, and the ultimate tensile strength varied from 239.2 MPa to 281.9 MPa. The ultimate compression strength varied from 313.7 MPa to 375.6 MPa, while the impact energy absorbed increased from 3.6 J to 5.3 J. These results open up new possibilities for the use of aluminum-12% Si-ZrO 2 metal matrix composites (MMC) in aerospace, marine, and automotive components by offering insightful information about how to create MMCs with improved characteristics.