Original title: Residual stresses of laser-welded pressure vessel steel determined by X-ray and neutron diffraction
Authors: Trojan, K. ; Vlk, A. ; Čapek, J. ; Hervoches, Charles ; Ganev, N.
Document type: Papers
Conference/Event: 57th International Scientific Conference on Experimental Stress Analysis (EAN 2019), Luhačovice (CZ), 20190603
Year: 2019
Language: eng
Abstract: To gain insight into the quality of the laser weld, information about the residual stress state across the weld is very useful. In this contribution, the residual stress profiles for lowalloy carbon steel plates of P355NL1 grade, which were laser welded from both sides, are presented. To separate the effects of the production of plates from the welding process, the samples were annealed for stress relieving. Using X-ray and neutron diffraction, the surface and bulk RS profiles were obtained. From the obtained data, first, the difference in the character of the longitudinal (parallel to the weld axis) and the transversal component of the RS tensor can be seen. The longitudinal component has a tensile character with a maximum value approximately 500 MPa. Values and character of the transversal component vary strongly with depth and distance from the weld axis.
Keywords: ferromagnetic materials; nondestructive examination; residual stresses
Project no.: LM2015056 (CEP)
Funding provider: GA MŠk
Host item entry: EAN 2019 - Conference Proceedings, ISBN 978-802145766-9

Institution: Nuclear Physics Institute AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0303045

Permalink: http://www.nusl.cz/ntk/nusl-408967


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