Three Dimensional FE Modeling of the Scratch Test for DLC coated High Speed Steel substrate

摘要

Diamond-like-carbon (DLC) coatings provide excellent surface properties on substrate. With novel advanced techniques like modeling and simulation, the performance of these coatings can be predicted under different loading condition. Aim of present study was to develop three dimensional models for calculating first principal stress distribution components in the scratch test contact as the spherical diamond tip is moving with increasing load on a DLC Coated high speed steel substrate. Two different types of coatings (DLC 2, DLC 6) were used to find out the stress distribution on coatings and substrate. The models were developed in HYPERMESH and analyzed in RADIOSS software. The model is comprehensive in the sense that it considers elastic, plastic and fracture behavior of the coating surfaces.