Application of the Plasticity Characteristic Determined by the Indentation Technique for Evaluation of Mechanical Properties of Coatings: I. Specific Features of the Test Method Procedure

摘要: Specific features of the test method procedure capable for determining plasticity characteristic δH by indentation inhomogeneous coatings affected residual stress was clarified. When value coating found to be as great > 0.5 a simplified model reasonably adequate, while modified assumed compressibility deformation core beneath indentation. The advantage approach compared one grounded experimentally only if elastic becomes greater than ee ≈ 3.5%, resulting in decrease < 0.5. To overcome non accuracy caused effect scale factor on measurement results comparison different suggested using stabilized values determined under loads higher critical, P ≥ Pc, ensuring week dependence microhardness load.