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Experimental Investigation on the Residual Stresses in a Thick Joint with a Partial Repair Weld Using Multiple-Cut Contour Method

1
Provincial Key Lab of Advanced Welding Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
2
China Nuclear Industry Huaxing Construction Company Limited, Nanjing 21000, China
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Author to whom correspondence should be addressed.
Materials 2018, 11(4), 633; https://doi.org/10.3390/ma11040633
Received: 7 April 2018 / Revised: 18 April 2018 / Accepted: 19 April 2018 / Published: 20 April 2018
(This article belongs to the Section Manufacturing Processes and Systems)
The stress distributions in a thick welded specimen with a partial repair weld were measured with the three-cut contour method. The longitudinal stress maps in the original weld and the repair weld were obtained and the transverse stress map at the weld centerline in the original weld was acquired. The difference between the longitudinal stress in the partial repair weld and that in the original weld was investigated. Results show that the longitudinal stress increases significantly within the entire repair region with a peak tensile longitudinal stress close to the yield strength of weld material; and the longitudinal stress in the region above the repair weld decreases distinctly after repair; the introduction of the partial repair weld does not affect the stress distribution trend in the original weld (whether it is beyond or above the repair weld), and it has a slight effect on the tensile stress distribution width in the repair region. View Full-Text
Keywords: repair weld; residual stress; multiple-cut contour method; thick welded specimen; superposition repair weld; residual stress; multiple-cut contour method; thick welded specimen; superposition
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Liu, C.; Wang, C.; Cheng, X.; Yan, Y.; Yang, J.; Guo, Y. Experimental Investigation on the Residual Stresses in a Thick Joint with a Partial Repair Weld Using Multiple-Cut Contour Method. Materials 2018, 11, 633.

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