Characterization of welding residual stresses with neutron diffraction
- Oak Ridge National Lab., TN (United States)
- Edison Welding Inst., Columbus, OH (United States)
Welding residual stresses are a key concern in the fabrication and use of structural components containing welds. Residual stresses in welds are caused by non-uniform expansion and shrinkage of differently heated zones during the thermal transient of a weld pass. In some alloys, solid state phase transformations occurring during the welding transient contribute additional residual stresses. Manufacturing problems arising from welding residual stresses include cracking and dimensional distortion. During use, tensile stresses in the welded zone limit the fatigue resistance of the component under cyclic loading. In an aggressive environment, tensile welding residual stresses also create a necessary condition for stress-corrosion cracking to take place.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 672109
- Report Number(s):
- ORNL/CP-97550; CONF-980627-; ON: DE98004895; BR: EE0403000; TRN: AHC2DT07%%269
- Resource Relation:
- Conference: 1998 SEM spring conference on experimental and applied mechanics, Houston, TX (United States), 1-3 Jun 1998; Other Information: PBD: Mar 1998
- Country of Publication:
- United States
- Language:
- English
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