Fracture behaviour of Ti/TiN multilayer thin film modeling and experimental validation

Conference Dates

October 2 – 7, 2022


Although titanium nitride is used as a hard protective coating, it is brittle. The multilayering of Ti/TiN film improves the nitride coating’s damage tolerance and expands its applications. The influence of layer spacing on multilayer fracture toughness (KIC) is not known and quantification is important for designing a multilayer with enhanced damage tolerance. The effect of multilayering on the crack tip driving force is investigated using finite element method (FEM) in this work. Elastic-plastic mismatch in Ti/TiN system is incorporated in simulation. Numerical simulations are performed for varying layer spacing for Ti/TiN systems.

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