Finite Element Analysis of Multilayered and Functionally Gradient Tribological Coatings With Measured Material Properties (Preprint)
UNIVERSAL TECHNOLOGY CORP DAYTON OH
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Proper design of functionally gradient FG coatings requires a thorough understanding of layer architecture, chemistry and mechanical properties. An elastic-plastic model has been developed to study the stress distribution in multilayered FG coatings using finite element method to achieve optimum design architecture for high wear resistance and low friction. Ti1-xCx 0x1 gradient coatings with diamond like carbon DLC coating on 440C stainless steel substrate were assumed as a series of perfectly bonded layers with unique material properties and layer thickness. In order to model the elastic-plastic behavior of these coatings accurately, nano-indentation experiments using a nano-indenter were performed to measure material properties of each Ti1-xCx gradient coating block. Using measured material properties, the numerical elastic-plastic model was used to examine the threshold of plasticity and plastic deformation zone inside the multilayered coatings and substrate and at the multilayered interfaces.
- Coatings, Colorants and Finishes
- Properties of Metals and Alloys
- Computer Programming and Software