Abstract
This paper examines the extent to which mechanical shot peening (MSP), ultrasonic impact
treatment (UIT) and laser shock peening (LSP) can affect the tensile residual stresses in the
fusion zone caused by welding for a 10mm multi-pass 'V' groove weld within a 20 mm thick 304L
stainless steel plate. Stresses are measured by deep hole drilling, neutron diffraction and incremental
center hole drilling. For the UIT and LSP treated samples, the tensile stresses present in the aswelded
plate are reversed to compressive stresses to a depth in excess of 2-4mm. For MSP the affected
depth is much less (~0.5mm). The depth of these compressive stresses is similar to those
measured in 20 mm thick parent plate test coupons.
Translated title of the contribution | Measurement of Residual Stresses in Surface Treated Stainless Steel Groove Welds |
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Original language | English |
Title of host publication | th European Conference on Residual Stresses (ECRS8), Riva del Garda (TN) Italy |
Publication status | Published - Jun 2010 |