Residual Stresses in Multi-Pass Butt-Welded Tubular Joints

Nico Hempel; Thomas Nitschke-Pagel; Klaus Dilger

doi:10.4028/www.scientific.net/AMR.996.488

Paper Titles

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The Influence of Austenite Grain Size during Welding Simulations of Ferritic Steels
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 996Residual Stresses in Multi-Pass Butt-Welded...

Residual Stresses in Multi-Pass Butt-Welded Tubular Joints

Abstract:

In this study, the mechanics of the residual stress development in multi-pass butt-welded joints of ferritic-pearlitic steel pipes are investigated. Therefore, the effects of the welding process and its parameters, as well as the impact of the preheating temperature on the residual stress state are studied by determining the temperature profile during welding and performing X-ray diffraction measurements on the pipes inner and outer surfaces. Additionally, residual stress depth distributions are determined using the incremental hole-drilling method. The residual stress distributions can be explained by phase transformations and thermal shrinkage, the latter being the governing mechanism in the tubular geometry of the welds.

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Periodical:

Advanced Materials Research (Volume 996)

Pages:

488-493

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.996.488

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Online since:

August 2014

Authors:

Nico Hempel*, Thomas Nitschke-Pagel, Klaus Dilger

Keywords:

Hole-Drilling Method, Residual Stress, Tubular Joint, Welding, X-Ray Diffraction (XRD)

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Creative Commons CC BY 4.0

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References

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