Numerical and Experimental Investigation of Layer Number Effect on Residual Stresses Cladding Process

Document Type : Research Article

Authors

Mechanical Faculty, Amirkabir University of Technology, Tehran, Iran

Abstract

Weld residual stress is one of the most sensitive issues in the safety and reliability of
structures such as nuclear reactor components. In order to prevent the corrosion caused by corrosive
environments, the inner surface of containers made of carbon steel, is cladded in a layer of austenitic
stainless steel. In this study, a steel plate of carbon steel A516-G70, will be cladded by the shielded metal
arc welding method. In order to validate the results, hole drilling method is used to determine residual
stresses. Finally, the residual stresses in samples with two and three layer cladding are examined. By
giving the sources of error in testing, the results have a relatively good compliance. The results indicate
that, the maximum amount of residual stresses in the clad layer, are tensile and in the stress limit, it is
in submission of base metal and cladding layer. Also, by increasing the number of layers in the cladding
layer thickness and steel plate, residual stresses are reduced. However, at the surface of the cladding
layer stresses have inconsiderable changes. And on the border between the cladding layer and the plate,
residual stress increases by increasing the number of layers.

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 49, Issue 4
March 2018
Pages 839-850

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