Meixner, M.; Fuss, T.; Klaus, M.; Genzel, M.; Genzel, C.: Diffraction analysis of strongly inhomogeneous residual stress depth distributions by modification of the stress scanning method - II. Experimental implementation. Journal of Applied Crystallography 48 (2015), p. 1462 - 1475
The modified stress scanning method (Meixner et al., 2015) is experimentally implemented for the analysis of near-surface residual stress depth distributions that are strongly inhomogeneous. On the one hand, the suggested procedure is validated by analyzing the very steep in-plane residual stress depth profile of a shot-peened Al2O3 ceramic specimen and comparing the results to those, which were obtained by well-established X-ray diffraction based gradient methods. On the other hand, the evaluation formalism is adapted to the depth dependent determination of the residual stresses inside of multilayer thin film systems (MLS). The applicability for this purpose is demonstrated by means of investigating the residual stress depth distribution within the individual sublayers of a multilayered coating that consists of alternating Al2O3 and TiCN thin films. In this connection, the specific diffraction geometry, which was used for the implementation of the stress scanning method at the energy-dispersive materials science beamline EDDI@BESSYII, is presented and experimental issues as well as limitations of the method are discussed.