Modeling of stresses at grain boundaries with respect to occurrence of stress corrosion cracking

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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 ... continued below

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7 p.

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Kozaczek, K. J.; Sinharoy, A.; Ruud, C. O. & McIlree, A. R. December 31, 1995.

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Description

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.

Physical Description

7 p.

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OSTI as DE96004937

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  • Improving the understanding and control of corrosion on the secondary side of steam generators, Airlie, VA (United States), 9-13 Oct 1995

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  • Other: DE96004937
  • Report No.: CONF-9510292--1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 188932
  • Archival Resource Key: ark:/67531/metadc671266

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Oct. 3, 2017, 6:42 p.m.

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Kozaczek, K. J.; Sinharoy, A.; Ruud, C. O. & McIlree, A. R. Modeling of stresses at grain boundaries with respect to occurrence of stress corrosion cracking, article, December 31, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc671266/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.