Inelastic Deformation of Metallic Coatings: Measurement and Analysis

Performance and reliability of TS coatings are strongly dependent upon their inelastic behavior. To that end, continuum-level flow stress and hardening have been explored by recourse to e.g., indentation, substrate curvature and tensile measurements. While the results of such efforts have great implication for process and quality control, further refinement is necessary for incorporation into models of wear, fatigue or delamination. Here we present results and analysis of mechanical testing on metallic TS coatings deposited by different methods, emphasizing particular characteristics under localized and cyclic loading.