Modeling of stresses at grain boundaries with respect to occurrence of stress corrosion cracking
- Oak Ridge National Lab., TN (United States)
- Pennsylvania State Univ., University Park, PA (United States)
- Electric Power Research Institute, Palo Alto, CA (United States)
The distributions of elastic stresses/strains in the grain boundary regions were studied by the analytical and the finite element models. The grain boundaries represent the sites where stress concentration occurs as a result of discontinuity of elastic properties across the grain boundary and the presence of second phase particles elastically different from the surrounding matrix grains. A quantitative analysis of those stresses for steels and nickel based alloys showed that the stress concentrations in the grain boundary regions are high enough to cause a local microplastic deformation even when the material is in the macroscopic elastic regime. The stress redistribution as a result of such a plastic deformation was discussed.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Electric Power Research Inst., Palo Alto, CA (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 188932
- Report Number(s):
- CONF-9510292-1; ON: DE96004937; TRN: 96:001408
- Resource Relation:
- Conference: Improving the understanding and control of corrosion on the secondary side of steam generators, Airlie, VA (United States), 9-13 Oct 1995; Other Information: PBD: 1995
- Country of Publication:
- United States
- Language:
- English
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