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Residual stress and strain in MIG butt welds in 5083-H321 aluminium: As-welded and fatigue cycled
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James, M, Hughes, Darren J., Hattingh, D, Mills, G and Webster, P (2009) Residual stress and strain in MIG butt welds in 5083-H321 aluminium: As-welded and fatigue cycled. International Journal of Fatigue, Vol. 31 (No. 1). pp. 28-40. doi:10.1016/j.ijfatigue.2008.04.010 ISSN 0142-1123.
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Official URL: http://dx.doi.org/10.1016/j.ijfatigue.2008.04.010
Abstract
This paper presents single-line residual stress profiles for 8 mm 5083-H321 aluminium plates joined by gas metal arc (MIG) welding. The data were obtained by synchrotron diffraction strain scanning. Weld metal stresses (up to ∼7 mm either side of the centreline) are quite scattered and unreliable because of the large epitaxial grain size in the fusion zone. Peak magnitude of the transverse stresses varies between +50 MPa (19% of parent plate proof strength) at the HAZ boundary to −150 MPa (57% of PP proof strength) at the weld centreline. Equivalent values for longitudinal stresses are +90 MPa (34% of PP proof strength) some 22 mm from the weld centreline to −120 MPa (45% of PP proof strength) at the weld centreline. Plate-to-plate variation in the as-welded transverse and longitudinal residual stress values across the weld toe region is around 40 MPa. The effect on residual stress and strain values of a sequence of applied fatigue loads was also considered and reported.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | International Journal of Fatigue | ||||
Publisher: | Elsevier Ltd | ||||
ISSN: | 0142-1123 | ||||
Official Date: | 2009 | ||||
Dates: |
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Volume: | Vol. 31 | ||||
Number: | No. 1 | ||||
Page Range: | pp. 28-40 | ||||
DOI: | 10.1016/j.ijfatigue.2008.04.010 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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