The investigation of the triaxial residual stress in the friction stir welded lap joint using neutron diffraction

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DOIResolve DOI: http://doi.org/10.4028/www.scientific.net/MSF.768-769.589
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TypeArticle
Proceedings titleInternational Conference on Residual Stresses 9 (ICRS 9)
Series titleMaterials Science Forum; Volume 768-769
Conference9th International Conference on Residual Stresses, ICRS 2012, October 7-9, 2012, Garmisch-Partenkirchen
ISSN0255-5476
ISBN9783037858493
Pages589596; # of pages: 8
SubjectDouble pass; Friction stir; High strength aluminum alloys; Lap joint; Non-destructive technique; Principal directions; Stress variations; Test specimens; Friction stir welding; Hammers; Neutron diffraction; Nondestructive examination; Stress concentration; Welds; Residual stresses
AbstractA detailed study of the complex triaxial residual stress distribution of the double-pass friction stir welded (FSW) lap-joint between two different high strength aluminum alloy sheet materials was conducted. A non-destructive technique known as neutron diffraction was used to measure the internal residual stress distribution in the three principal direction of the lap-joint in the as-welded and hammer peened configurations to determine effects of hammer peening on redistribution of residual stresses across the weld. The residual stress variation across the weld in the transverse direction contained the highest values of tensile stress in all three principal directions. The residual stress in the hammer peened test specimen was in most cases reduced in all three principal directions.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace
Peer reviewedYes
NPARC number21270875
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Record identifierd15e1ce2-20f0-47d9-aed0-47cfee4bb750
Record created2014-02-17
Record modified2016-05-09
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