About the Capability of X-ray Diffraction Technique for Diagnostics of Technological Residual Stresses

The contribution is focused on the selected recent experience of the X-ray diffraction laboratory of the Czech technical university in Prague with industrial applications of X-ray diffraction residual stress determination on cold-worked surfaces, for assessing effect of working conditions and parameters of conventional and unconventional methods of machining. Since any interaction with work-piece during machining is realized over its free surface, the state of residual stresses in surface layers could have a predominant impact on the reliability and service life of machine components. As any process of machining accompanied by inhomogeneous plastic deformation leads to formation of residual stresses, their volume distribution is of great importance. Recently that is the reason of the growing interest for complementing traditional materials' characteristics like strength, toughness, and wear resistance, with information about field of residual stresses.