Finite Element Analysis of Multilayered and Functionally Gradient Tribological Coatings with Measured Material Properties
| Autor: | Young Sup Kang, J.H. Sanders, Andrey A. Voevodin, Shashi K. Sharma |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Diamond-like carbon Mechanical Engineering Surfaces and Interfaces engineering.material Nanoindentation Indentation hardness Finite element method Surfaces Coatings and Films Coating Mechanics of Materials Indentation engineering Composite material Material properties Layer (electronics) |
| Zdroj: | Tribology Transactions. 51:817-828 |
| ISSN: | 1547-397X 1040-2004 |
| DOI: | 10.1080/10402000802302482 |
| Popis: | A model has been developed to study the stress distribution in Ti1 − xCx multilayered functionally gradient (FG) coatings, with a top coating of diamond-like carbon (DLC), on 440C stainless steel substrates. Using the finite element method, these gradient coatings were assumed as a series of perfectly bonded layers with unique material properties and layer thickness. In addition, a matrix of nanoindentation experiments were performed to measure material properties of each Ti1 − xCx layer on separate coating blocks. The yield strength of the coating materials was then determined by coupling the finite element analysis model in connection with the nanoindentation technique. Once developed, this model was used to examine the threshold of plasticity and identify the plastic deformation zone inside the multilayered coatings and substrate. This work shows how the multilayered FG Ti/TiC/DLC coating system improves the coating integrity under heavy loading conditions. |
| Databáze: | OpenAIRE |
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