Investigation of residual stresses in dissimilar copper-steel joint welded by electron beam
apitiv@ie.bas.bg- bdarinakaisheva@abv.bg
- cgizo@nf.jinr.ru
- dpiv@nf.jinr.ru
- estsvalkov@gmail.com
- DOI: https://doi.org/10.5937/zzk1904149P
- Article Type: Original scientific paper
- Language: English/Serbian
- Received: October 2019
- Accepted: --
Abstract
The results of experimental determination of residual stress distribution in dissimilar materials welded by the EBW method via neutron diffraction are presented. The joints between copper and stainless steel were investigated. Two samples with different beam currents were welded. The residual stresses were measured using the TOF diffraction method at a pulsed neutron source. The strain is determined by the relative change in the neutron time of flight. Analysis of the widths of the peaks made it possible to obtain information on microstrains in the samples. The residual stresses in copper do not exceed 100 MPa in both samples. The maximum stresses can be seen in the steel zone of thermal impact in the X component—450MPa.
Keywords
electron beam welding, dissimilar joints, neutron diffraction, residual stresses, microstrains
Acknowledgements
The paper was originally published in the Proceedings of the 4th IIW South-East European Welding Congress Safe Welded Construction by High Quality Welding, held in Belgrade, from October 10 to 13, 2018.
References
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