Application of Desirability Function Approach for Optimized Process Parameters of Electrical Discharge Alloying of Al 7075 with Nickel Powder

  • A. Haja MaideenEmail author
  • Muthukannan Duraiselvam
  • M. Varatharajulu
Technical Paper


Electrical discharge alloying was performed on Al 7075 alloy with nickel powder mixed dielectric fluid to enhance wear resistance and to examine the self-lubricating properties. The present work highlights the concept of alloying of Al 7075 with nickel as a constituent material. Material characteristics such as powder concentration and alloyed layer thickness were analyzed through scanning electron microscope, electron-dispersive spectroscopy, optical microscopy and wear analysis was done using a pin-on-disc apparatus. The influence of machine peak current (I), pulse on time (Pon) and pulse off time (Poff) on wear performance of electrical discharge alloyed Al 7075 structural material was studied using response surface methodology technique. Analysis of variance was used to identify the vital contribution of input parameters on the performance characteristics.


Electrical discharge alloying Optimization RSM technique Specific wear rate Surface roughness 



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Copyright information

© The Indian Institute of Metals - IIM 2019

Authors and Affiliations

  • A. Haja Maideen
    • 1
    Email author
  • Muthukannan Duraiselvam
    • 2
  • M. Varatharajulu
    • 1
  1. 1.Department of Mechanical EngineeringA. V. C. College of EngineeringMannampandalIndia
  2. 2.Department of Production EngineeringNational Institute of TechnologyTiruchirappalliIndia

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