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A Critical Review on Residual Stresses in Welded Joints

Author(s):

Renuka Nethi , Vidya Jyothi Institute of Technology; V. Ramalingeswara Rao, Vidya Jyothi Institute of Technology; Naresh Mamidi, Vidya Jyothi Institute of Technology; Addetla Girish Kumar, Vidya Jyothi Institute of Technology

Keywords:

Residual Stresses, Residual Stresses in Welding, X-Ray Diffraction Method, Weldments

Abstract

Residual stresses are secondary stresses exist after all loads are removed. Residual stresses can be favorable or detrimental to some components, depending on the type of material. Usually, tensile residual stress can cause harm to components while compressive residual stress can improve the component quality. Residual stresses, either tensile or compressive are present in almost all manufactured components. Residual stresses, either tensile or compressive can be found in welding components. Many researchers agreed that tensile residual stress can be found in the weld metal area, but the compressive residual stress distribution is complex. The distribution of welding residual stress varies in different locations depending on welding parameters, types, sequence, component type, component materials and component sizes. Residual stress in weldments is one of the major concerns in manufacturing industries. They occur, sometimes during the initial processing of metals and sometimes during rolling, forging, casting etc. In welding these stresses develop due to non-uniform cooling of the welded zone. Tensile stresses are primarily responsible for crack initiation and product failure. Residual stress may also lead to premature failure of the welded joints when subjected to hazardous conditions. There are various physical methods of detection of residual stress in weldments such as x-ray diffraction and deep- hole- drilling. Nevertheless, numerical, is also one of the most popular methods among researchers to solve various complex engineering problems. The current review aims at discussing the types, causes and effects of residual stresses in welded joints. The scope of the review also includes discussing different residual stress measuring methods.

Other Details

Paper ID: IJSRDV6I80086
Published in: Volume : 6, Issue : 8
Publication Date: 01/11/2018
Page(s): 88-93

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