Evaluation of Residual Stresses in Laser Welded High-Pressure Vessels Steels by X-Ray Diffraction

Abstract:

This paper contains results of a comprehensive experimental programme aimed at an evaluation of residuals stresses in and near laser welds of pressure vessels steels using X-ray diffraction method. Welds were prepared by the company RAPTECH s.r.o., where two types of steel plates, namely P355 and P460 of the thickness 5, 8 and 10 mm, were welded by a laser beam with specific parameters. Surface transversal and longitudinal stresses were analysed on both sides of the welds, namely upper and downside. The results, important for further applications of the used technology, are discussed particularly from the viewpoint of possible critical areas near the welds and their impact on fatigue loading.

• Periodical: Key Engineering Materials (Volume 827)
• Pages: 165-170
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.827.165
• Online since: December 2019
• Authors: Jiří Čapek*, Nikolaj Ganev
• Keywords: Laser Welds, Pressure Vessel Steels, X-Ray Diffraction

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