A residual stress study in similar and dissimilar welds
- Clarkson Univ., Potsdam, NY (United States). Department of Mechanical and Aeronautical Engineering
- Carleton Univ., Ottawa, ON (Canada)
- Univ. of Bristol, Bristol (United Kingdom)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Residual strain distributions in similar and dissimilar welds were measured using neutron diffraction (ND) method. Then, using three strain components, three-dimensional stress states were calculated. The results were used to determine the effect of the martensitic phase transformation and material properties on residual stress (RS) distribution. It was observed that smaller longitudinal RS was induced in the low carbon steel side of dissimilar weld when compared to its similar weld. Also, it was found that the transverse RS near and within the weld zone (WZ) in dissimilar weld exhibited a distinctive trend, with tensile mode reaching the yield strength of the base metal (BM). In order to characterize the WZ in dissimilar weld, we deployed optical microscopy, hardness, and energy dispersive X-ray spectroscopy (EDAX). This study not only provides further insight into the RS state in similar and dissimilar welds; it also delivers important consequences of phase transformation in the latter case.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1245352
- Journal Information:
- Welding Journal, Vol. 95, Issue 4; ISSN 0043-2296
- Publisher:
- American Welding SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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