Influence of coating thickness and operating parameters on the tribological characteristics of Inconel 625 components fabricated using DMD

Paper #:
  • 2017-28-1972

  • 2017-07-10
Direct Metal Deposition (DMD) is a rapid prototyping technique used to fabricate and repair metallic prototypes. It can be used in the production of complex geometries and unique parts. In functional automotive applications wear characteristics hold key importance. In the present study, an analysis on the influence of various parameters (coating thickness, load and temperature) on the wear characteristics of Direct Metal Deposited (DMD) Inconel 625 coating has been carried out using a Design of Experiments (DOE). ANOVA calculations were performed to find out which of these parameters showed significant influence on the wear properties. It was found that load was the most significant parameter influencing the wear characteristics .Similarly load was found to be most influencing parameter for co efficient of friction. The trend was found to follow when verified at 30 second, 3 minutes, 60 minutes and 120 minutes. The present work also included the analysis of surface roughness, microstructure and micro hardness.
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