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An investigation into the effect of weld technique on the residual stress distribution of 3CR12 (DIN 1.4003) built-up structural sections

Klopper, J. J.; Laubscher, R. F.; Steuwer, Axel LU and James, M. N. (2011) In Proceedings of the Institution of Mechanical Engineers. Part L: Journal of Materials: Design and Applications 225(L3). p.123-132
Abstract
This article presents an experimental investigation of thermally induced residual stresses in fabricated 3CR12 (DIN 1.4003) T-sections. 3CR12 is a weldable utility stainless steel developed to provide a superior alternative to coated carbon steels and other alloys which have a poor corrosion/abrasion resistance. Because of the difficulty and costs involved in hot-rolling stainless steel structural sections, they are usually fabricated by welding. In this investigation, full-penetration laser- and manual metal arc (MMA) joints were considered along with partial-penetrated MMA- and metal inert gas (MIG) welded joints. The residual stresses induced during welding were measured by neutron diffraction. All the sections displayed a largely... (More)
This article presents an experimental investigation of thermally induced residual stresses in fabricated 3CR12 (DIN 1.4003) T-sections. 3CR12 is a weldable utility stainless steel developed to provide a superior alternative to coated carbon steels and other alloys which have a poor corrosion/abrasion resistance. Because of the difficulty and costs involved in hot-rolling stainless steel structural sections, they are usually fabricated by welding. In this investigation, full-penetration laser- and manual metal arc (MMA) joints were considered along with partial-penetrated MMA- and metal inert gas (MIG) welded joints. The residual stresses induced during welding were measured by neutron diffraction. All the sections displayed a largely tensile residual stress field around the weld that subsequently implied a compressive residual stress field in the flange regions. This was most pronounced for the MMA and MIG welds. The laser- welded sections displayed a more localized tensile residual stress field in the heat-affected zone that translated to lower average stresses in the flanges. In the latter part of this article, the effect of the weld-induced residual stress fields on the structural performance of appropriate T-section-based columns are assessed and compared. A significant difference in structural performance between the different weld techniques is predicted with the laser- welded sections displaying the highest predicted strength. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
3CR12, DIN 1.4003, welding, residual stress/strain, neutron, diffraction, stainless steel, T-section, professional ratio (factor)
in
Proceedings of the Institution of Mechanical Engineers. Part L: Journal of Materials: Design and Applications
volume
225
issue
L3
pages
123 - 132
publisher
SAGE Publications Inc.
external identifiers
  • wos:000293924800002
  • scopus:80052881416
ISSN
1464-4207
DOI
10.1177/0954420711404326
language
English
LU publication?
yes
id
18895670-9b56-4fab-a217-86b7b3066fa1 (old id 2161633)
date added to LUP
2011-09-21 12:14:12
date last changed
2017-01-01 05:34:53
@article{18895670-9b56-4fab-a217-86b7b3066fa1,
  abstract     = {This article presents an experimental investigation of thermally induced residual stresses in fabricated 3CR12 (DIN 1.4003) T-sections. 3CR12 is a weldable utility stainless steel developed to provide a superior alternative to coated carbon steels and other alloys which have a poor corrosion/abrasion resistance. Because of the difficulty and costs involved in hot-rolling stainless steel structural sections, they are usually fabricated by welding. In this investigation, full-penetration laser- and manual metal arc (MMA) joints were considered along with partial-penetrated MMA- and metal inert gas (MIG) welded joints. The residual stresses induced during welding were measured by neutron diffraction. All the sections displayed a largely tensile residual stress field around the weld that subsequently implied a compressive residual stress field in the flange regions. This was most pronounced for the MMA and MIG welds. The laser- welded sections displayed a more localized tensile residual stress field in the heat-affected zone that translated to lower average stresses in the flanges. In the latter part of this article, the effect of the weld-induced residual stress fields on the structural performance of appropriate T-section-based columns are assessed and compared. A significant difference in structural performance between the different weld techniques is predicted with the laser- welded sections displaying the highest predicted strength.},
  author       = {Klopper, J. J. and Laubscher, R. F. and Steuwer, Axel and James, M. N.},
  issn         = {1464-4207},
  keyword      = {3CR12,DIN 1.4003,welding,residual stress/strain,neutron,diffraction,stainless steel,T-section,professional ratio (factor)},
  language     = {eng},
  number       = {L3},
  pages        = {123--132},
  publisher    = {SAGE Publications Inc.},
  series       = {Proceedings of the Institution of Mechanical Engineers. Part L: Journal of Materials: Design and Applications},
  title        = {An investigation into the effect of weld technique on the residual stress distribution of 3CR12 (DIN 1.4003) built-up structural sections},
  url          = {http://dx.doi.org/10.1177/0954420711404326},
  volume       = {225},
  year         = {2011},
}