Study on the residual stress relaxation in girth-welded steel pipes under bending load using diffraction methods
Abstract
This research is dedicated to the experimental investigation of the residual stress relaxation in girth-welded pipes due to quasi-static bending loads. Ferritic-pearlitic steel pipes are welded with two passes, resulting in a characteristic residual stress state with high tensile residual stresses at the weld root. Also, four-point bending is applied to generate axial load stress causing changes in the residual stress state. These are determined both on the outer and inner surfaces of the pipes, as well as in the pipe wall, using X-ray and neutron diffraction. Focusing on the effect of tensile load stress, it is revealed that not only the tensile residual stresses are reduced due to exceeding the yield stress, but also the compressive residual stresses for equilibrium reasons. Furthermore, residual stress relaxation occurs both parallel and perpendicular to the applied load stress.
- Authors:
-
- Braunschweig Univ. of Technology (Germany). Institute of Joining and Welding Langer Kamp
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Braunschweig Univ. of Technology (Germany). Institute of Joining and Welding Langer Kamp
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1346663
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
- Additional Journal Information:
- Journal Volume: 688; Journal ID: ISSN 0921-5093
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; X-ray diffraction; Neutron scattering; Steel; Welding; Residual stresses
Citation Formats
Hempel, Nico, Bunn, Jeffrey R., Nitschke-Pagel, Thomas, Payzant, E. Andrew, and Dilger, Klaus. Study on the residual stress relaxation in girth-welded steel pipes under bending load using diffraction methods. United States: N. p., 2017.
Web. doi:10.1016/j.msea.2017.02.005.
Hempel, Nico, Bunn, Jeffrey R., Nitschke-Pagel, Thomas, Payzant, E. Andrew, & Dilger, Klaus. Study on the residual stress relaxation in girth-welded steel pipes under bending load using diffraction methods. United States. https://doi.org/10.1016/j.msea.2017.02.005
Hempel, Nico, Bunn, Jeffrey R., Nitschke-Pagel, Thomas, Payzant, E. Andrew, and Dilger, Klaus. Thu .
"Study on the residual stress relaxation in girth-welded steel pipes under bending load using diffraction methods". United States. https://doi.org/10.1016/j.msea.2017.02.005. https://www.osti.gov/servlets/purl/1346663.
@article{osti_1346663,
title = {Study on the residual stress relaxation in girth-welded steel pipes under bending load using diffraction methods},
author = {Hempel, Nico and Bunn, Jeffrey R. and Nitschke-Pagel, Thomas and Payzant, E. Andrew and Dilger, Klaus},
abstractNote = {This research is dedicated to the experimental investigation of the residual stress relaxation in girth-welded pipes due to quasi-static bending loads. Ferritic-pearlitic steel pipes are welded with two passes, resulting in a characteristic residual stress state with high tensile residual stresses at the weld root. Also, four-point bending is applied to generate axial load stress causing changes in the residual stress state. These are determined both on the outer and inner surfaces of the pipes, as well as in the pipe wall, using X-ray and neutron diffraction. Focusing on the effect of tensile load stress, it is revealed that not only the tensile residual stresses are reduced due to exceeding the yield stress, but also the compressive residual stresses for equilibrium reasons. Furthermore, residual stress relaxation occurs both parallel and perpendicular to the applied load stress.},
doi = {10.1016/j.msea.2017.02.005},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
number = ,
volume = 688,
place = {United States},
year = {Thu Feb 02 00:00:00 EST 2017},
month = {Thu Feb 02 00:00:00 EST 2017}
}
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Works referencing / citing this record:
Current capabilities of the residual stress diffractometer at the high flux isotope reactor
journal, September 2018
- Cornwell, P.; Bunn, J.; Fancher, C. M.
- Review of Scientific Instruments, Vol. 89, Issue 9
Micromechanism of Cold Deformation of Two-Phase Polycrystalline Ti–Al Alloy with Void
journal, January 2019
- Feng, Ruicheng; Wang, Maomao; Li, Haiyan
- Materials, Vol. 12, Issue 1
FE analysis of the residual stresses for the laser welded T-joint of Al-Li alloy under service loads
journal, July 2019
- Wu, Youfa; Zhan, Xiaohong; Yu, Haisong
- Materials Research Express, Vol. 6, Issue 9
Micromechanism of Cold Deformation of Two-Phase Polycrystalline Ti–Al Alloy with Void
journal, January 2019
- Feng, Ruicheng; Wang, Maomao; Li, Haiyan
- Materials, Vol. 12, Issue 1