Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5455526 | Materials Science and Engineering: A | 2017 | 43 Pages |
Abstract
Intergranular strain has been associated with high-temperature cracking of welded pipework in 316H austenitic stainless steel material used in nuclear power plant heat exchangers. In this study, neutron diffraction has been used to study the development of intergranular strains in plastically-deformed and welded 316H stainless steel. Measurements have been made of the intergranular strain evolution with increasing plastic strain in base material, and correlated with further measurements made in samples extracted from welded pipes, where the pipes were welded following plastic deformation to different levels of plastic strain. Strong tensile strain evolution was seen on the compliant 200 grain family. The results were correlated with various proxy measures of plastic strain, including hardness and diffraction peak width, and excellent agreement was obtained.
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Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Murat O. Acar, Michael E. Fitzpatrick,