20.500.12556/DKUM-93183 Comparison of three methods of measuring residual stresses in welded joints of high-strength steel S960QL The influence of residual stresses as a result of the welding process in the overall stress state of the weld joint is of great importance because they significantly affect the creation and growth of cracks, the occurrence of brittle fracture, and material fatigue. Previous experiences indicate that it would be necessary to provide an assessment of the deformation and stress state in the critical zones of the weld joints using a suitable test method, which will not endanger the structural integrity of the tested places. There are different methods for measurement of residual stress in welded constructions: destructive, semi-destructive and non-destructive. To choose one method over another, it is necessary to take into account the advantages and limitations of these techniques for practical application. This paper considers and analyzes the residual stresses in the welded joint of high-strength steel S960QL. MAG welding was performed by a robot. Three methods were used to measure the residual stresses: the magnetic method (MAS), the X-ray diffraction method (XRD), and the hole drilling method (HD). By all three methods, the highest residual stresses were measured in the weld metal and in the heat-affected zones. Nevertheless, the measured values differed considerably. The differences can be contributed to (a) the kind of stress that the individual method measures, (b) to the volume of material from which each method captures the signal and averages it, and (c) to the different sensitivities of the applied methods to coarse-grained microstructure and microstructural gradients. welded joints high-strength steel residual stress magnetic method X-ray diffraction method hole drilling method zvarni spoji visokotrdnostno jeklo zaostale napetosti magnetna metoda metoda rentgenske difrakcije metoda vrtanja lukenj true false true MDPI Angleški jezik Slovenski jezik https://www.mdpi.com/1996-1944/18/5/950 © 2025 by the authors Članek v reviji 2025-06-11 15:22:16 2025-06-11 15:22:17 2025-06-17 08:37:43 0000-00-00 00:00:00 2025 0 0 21 str. iss. 5, [article no.] 950 Vol. 18 Feb. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-01-27 2025-02-19 2025-02-21 621.791:539.4 239053315 10.3390/ma18050950 1996-1944 materials-18-00950.pdf materials-18-00950.pdf 1 841CC61F1E1D1B1A4B64F7FD5C457F3A 428ef233bb438a6f5bfc22d48c010203ed1de7a93c626e89418c6ef178828c96 728777b1-46c7-11f0-b893-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=192093 https://www.mdpi.com/1996-1944/18/5/950 0 794e70ab-46c7-11f0-b893-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=192094 Fakulteta za strojništvo 0 0 0