Influence of Weld Repair by Gouging on the Residual Stresses in High Strength Steels

Influence of Weld Repair by Gouging on the Residual Stresses in High Strength Steels

A. Kromm, R. Schasse, P. Xu, T. Mente, T. Kannengiesser

Abstract. Carbon arc-air gouging is a common technology when repairing defects in welded structures. Often this technique is applied in repeated cycles even on the same location of the joint. Due to the multiple heat input by gouging and subsequent re-welding, the residual stresses are strongly influenced. This can become crucial when microstructure and mechanical properties are adversely affected by multiple weld reparations. Knowledge about the relation of gouging and residual stresses is scarce but important when high strength steels, which are sensitive to residual stresses, are processed. The present study shows the effect of repair welding on a high strength steel structural element. The weld and the heat affected zone were subjected to multiple thermal cycles by gouging and subsequent repair welding. The residual stresses were determined by X-ray diffraction at different positions along the joint. The results showed that the residual stress level has increased by the repair cycles. This is most pronounced for the heat affected zone. Adapted welding procedures may prevent detrimental residual stress distributions.

Keywords
Repair Welding, Weld Residual Stress, Carbon Arc-Air Gouging

Published online 12/22/2016, 6 pages
Copyright © 2016 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: A. Kromm, R. Schasse, P. Xu, T. Mente, T. Kannengiesser, ‘Influence of Weld Repair by Gouging on the Residual Stresses in High Strength Steels’, Materials Research Proceedings, Vol. 2, pp 169-174, 2017

DOI: http://dx.doi.org/10.21741/9781945291173-29

The article was published as article 29 of the book Residual Stresses 2016

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] V.S. Miltyutin, The effect of arc-air cutting on the quality of metal, Welding Production 26 (1979) 44-46.
[2] Doshchechkina et al., Changes in the Structure of the surface zone in the air-cutting of metals, Welding Production 27 (1980) 40-42.
[3] K. Satoh, Y. Ueda, H. Kihara, Recent Trend of Researches on Restrain Stresses and Strains for Weld Cracking, Transactions of JWRI (1972) 53-68.
[4] K. Satoh, An Analytical Approach to the Problem of Restraint Intensity in Slit Weld. Transactions of JWRI (1972) 69-76.
[5] C. Schwenk, T. Kannengiesser, M. Rethmeier, Restraint Conditions and Welding Residual Stresses in Self-Restrained Cold Cracking Test, in: S.A. David, T. DebRoy, J.N. DuPont, T. Koseki, H.B. Smartt (Eds.), Trends in Welding Research. Proceedings of the 8th International Conference, 2009, pp. 766-773.
[6] Y. Ueda, K. Fukuda, Y.C. Kim, R. Koki, Characteristics of Restraint Stress-Strain of Slit Weld in a Finite Rectangular Plate and the Significance of Restraint Intensities as a Dynamical Measure, Transaction of JWRI 11 (1982) 105-113.
[7] Y. Ueda, K. Fukuda, I. Nishimura, H. Iiyama, N. Chiba, Cracking in welded corner joints. Metal Construction and British Welding Journal 1 (1984) 30-34.
[8] R.D. Stout, R. Vasudevan, W. Pense, A Field Weldability Test for Pipeline Steels, Welding Journal 55 (1976) 89-94.
[9] R. Vasudevan, R.D. Stout, W. Pense, A Field Weldability Test for Pipeline Steels – Part II, Welding Journal 59 (1980) 76-84.
[10] E. Macherauch and P. Müller, Das sin²ψ – Verfahren der röntgenographischen Spannungsmessung, Z. angew. Physik 13 (1961) 305-312 (in German).
[11] T. Nitschke-Pagel, H. Wohlfahrt, Residual Stresses in Welded Joints – Sources and Consequences, Mater. Sci. Forum 404-407 (2002) 215-226. http://dx.doi.org/10.4028/www.scientific.net/MSF.404-407.215