PSI - Issue 43

Zuzana Molčanová et al. / Procedia Structural Integrity 43 (2023) 89– 94 Author name / Structural Integrity Procedia 00 (2022) 000 – 000

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• The material in the center of the weld is composed of constituent materials the fcc-Ni solid solution and the bcc-Fe (ferrite). No other phase has been detected. • The residual strain-stress analysis shows that the sample after explosion welding is under high tensile stress. The clad material at the weld reaches normal stresses σ 22 720 MPa. The ferritic steel at the same place is under tension 500 MPa. The following heat treatments OC1 and OC2 effectively reduce the stresses. After the OC2 the bimetals show homogeneously distributed stresses over the entire material with magnitude of their normal components < 200 MPa. Acknowledgements This work was supported by the Slovak Research and Development Agency under contract No. APVV-20-0205, APVV-20-0068, APVV-20-0138. Authors are grateful also to the Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic and the Slovak Academy of Sciences (VEGA project No. 2/0039/22). We would like to thank the staff of the Diamond Light Source for assistance and support in using beamline I15. The project „Novel explosive welded corrosion resistant clad materials for geothermal plants” - ExploGuard in Poland is funded by The National Centre for Research and Development according to the contract No. M-ERA.NET/2013/01/2015. References Barbier, E., 2002. Geothermal energy technology and current status: an overview. Renewable and Sustainable Energy Reviews, 6(1 – 2), 3 – 65. Findik, F., 2011. Recent developments in explosive welding. Materials & Design, 32(3), 1081 – 1093. Hammersley, A. P., IUCr., 2016. FIT2D: a multi-purpose data reduction, analysis and visualization program. Urn: ISSN:1600-5767, 49(2), 646 – 652. He, B. B., 2018. Two-dimensional X-ray Diffraction. Two-Dimensional X-Ray Diffraction. Wiley Online Library Kaya, T., Hoşhan, P., Jeotermal Mühendislik, O., ve Ticaret AŞAnkara, S., Araştırma Merkezi, T. , 2005. Corrosion and Material Selection for Geothermal Systems. Proceedings World Geothermal Congress, 24 – 29. Schell, N., King, A., Beckmann, F., Fischer, T., Müller, M., & Schreyer, A. , 2014. The High Energy Materials Science Beamline (HEMS) at PETRA III. Materials Science Forum, 772, 57 – 61. Toby, B. H., von Dreele, R. B., 2013. GSAS-II: The genesis of a modern open-source all purpose crystallography software package. Journal of Applied Crystallography, 46(2), 544 – 549.