• Joshua, J.
• Kandavalli, Sumanth R.
• Raja, Rosari
• Jannet, Sabitha
• Rajaram, Ebinezer

Abstract

Metal matrix surface composite applications are becoming more and more common and in-demand. The goal of the research is to create and evaluate metal matrix surface composites made with the FSP approach in terms of their mechanical characteristics. AL 7075 was selected as the matrix material because of its robust mechanical properties and numerous industrial uses. Because of their great strength, ductility, and thermal stability, molybdenum, nickel, and graphite were selected as reinforcing materials. For the FSP procedure, a pin with a hexagonal profile was utilized. The milling machine's rotational speed was adjusted to 780 rpm for the procedure. When compared to their pure equivalents, the tensile, hardness, and wear findings of the resulting composite material revealed an increase in results. Additionally, the microstructure of the resulting composite material showed that the grains had been finely refined, particularly in the stir zone. The stir zone's surrounding areas, which include the TMAZ and HAZ, exhibited low-angle grain boundaries and coarse grains in comparison to the base metal.

Topics

• impedance spectroscopy
• surface
• molybdenum
• grain
• nickel
• grinding
• aluminium
• milling
• strength
• composite
• hardness
• ductility