The effect of TiAlN-based and AlCrN-based coatings towards mechanical properties on punch tools using finite element method
© 2020 Malaysian Tribology Society (MYTRIBOS). All rights reserved. Wear problem in the application of punching tools is not something new due to the process that involved shear and friction. In order to improve the performance of the tool and the quality of the product, another alternative aside from lubrication, known as coating is widely used and it acts as a wear protection and extends the life of a punch tool. Multi layered coating has better hardness and elasticity than single coatings. However, the variety in layered coating is less studied especially in terms of thickness and structure. In this study, nanoindentation simulation using finite element method was carried out by constructing coating and substrate model with different thickness and structure. TiAlN contributes in increasing the value of elasticity while AlCrN contributes more to the value of hardness and is more suitable to be used as a surface layer. In this test result, the AlCrN / TiAlN double-coated coating with a thickness of 2.5 µm for individual layers is the most suitable coating used for punching tool applications. This is because it has the highest H / E ratio of 0.0975 and has optimum hardness and elasticity compared to other structures which are 37.45 GPa and 384.09 GPa respectively.