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Effect of welding parameters on residual stresses in dissimilar joint of stainless steel to carbon steel

Ranjbarnodeh, E ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1007/s10853-010-5207-8
  3. Publisher: 2011
  4. Abstract:
  5. In this study, a thermo-mechanical model was utilized to investigate the effects of welding parameters on the distribution of residual stresses in dissimilar TIG welds of low carbon and ferritic stainless steels. To solve the governing thermal and mechanical problems, a finite element program, ANSYS, was employed while the different aspects such as welding sequence and dilution were considered in the numerical solution. To validate the predictions, the model results were compared with the residual stresses measured by X-ray diffraction technique and a reasonable agreement was found. The results show that the magnitude of tensile residual stresses decrease as the welding current increases while lower residual stresses are produced in the longer samples. In addition, the magnitudes of residual stresses significantly decrease when a symmetric welding sequence is employed especially for the carbon steel part with the higher yield strength
  6. Keywords:
  7. Dissimilar joints ; Distribution of residual stress ; Ferritic stainless steel ; Finite element programs ; Higher yield ; Low carbon ; Mechanical problems ; Model results ; Numerical solution ; Tensile residual stress ; Thermomechanical model ; TIG welds ; Welding current ; Welding parameters ; Welding sequences ; X-ray diffraction techniques ; Ferritic steel ; Low carbon steel ; Residual stresses ; Welding ; X ray diffraction ; Stainless steel
  8. Source: Journal of Materials Science ; Volume 46, Issue 9 , 2011 , Pages 3225-3232 ; 00222461 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs10853-010-5207-8