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Title: Deformation microstructure developed during fatigue crack propagation in Type 316 stainless steel at 593/sup 0/C

Abstract

The failure modes and dislocation substructure produced by fatigue crack propagation at 593/sup 0/C in fast neutron irradiated and unirradiated Type 316 stainless steel were studied. The results indicate that the dislocation substructure produced by the crack propagation during both cyclic and combined cyclic-static loading conditions was directly dependent on the extent of matrix deformation as reflected by the mode of crack propagation. The results are consistent with the activation of either grain boundary or matrix mechanisms for deformation, as related to loading conditions, at the temperature investigated. The influence of neutron irradiation was to alter the operation of the basic deformation mechanisms by the increased difficulty of matrix dislocation motion resulting from the irradiation-induced defect production.

Authors:
;
Publication Date:
Research Org.:
Naval Research Lab., Washington, DC
OSTI Identifier:
5616725
Report Number(s):
CONF-820628-
Journal ID: CODEN: ASTTA
Resource Type:
Conference
Journal Name:
Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)
Additional Journal Information:
Journal Volume: 782; Conference: 11. international symposium on effects of radiation on materials, American Society for Testing and Materials, Scottsdale, AZ, USA, 28 Jun 1982
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; STAINLESS STEEL-316; PHYSICAL RADIATION EFFECTS; CRACK PROPAGATION; DISLOCATIONS; ELECTRON MICROSCOPY; FAST NEUTRONS; FATIGUE; HIGH TEMPERATURE; MICROSTRUCTURE; ALLOYS; BARYONS; CHROMIUM ALLOYS; CHROMIUM STEELS; CHROMIUM-NICKEL STEELS; CORROSION RESISTANT ALLOYS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELEMENTARY PARTICLES; FERMIONS; HADRONS; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; IRON ALLOYS; IRON BASE ALLOYS; LINE DEFECTS; MATERIALS; MECHANICAL PROPERTIES; MICROSCOPY; MOLYBDENUM ALLOYS; NEUTRONS; NICKEL ALLOYS; NUCLEONS; RADIATION EFFECTS; STAINLESS STEELS; STEELS; 360106* - Metals & Alloys- Radiation Effects

Citation Formats

Michel, D J, and Smith, H H. Deformation microstructure developed during fatigue crack propagation in Type 316 stainless steel at 593/sup 0/C. United States: N. p., 1982. Web.
Michel, D J, & Smith, H H. Deformation microstructure developed during fatigue crack propagation in Type 316 stainless steel at 593/sup 0/C. United States.
Michel, D J, and Smith, H H. Fri . "Deformation microstructure developed during fatigue crack propagation in Type 316 stainless steel at 593/sup 0/C". United States.
@article{osti_5616725,
title = {Deformation microstructure developed during fatigue crack propagation in Type 316 stainless steel at 593/sup 0/C},
author = {Michel, D J and Smith, H H},
abstractNote = {The failure modes and dislocation substructure produced by fatigue crack propagation at 593/sup 0/C in fast neutron irradiated and unirradiated Type 316 stainless steel were studied. The results indicate that the dislocation substructure produced by the crack propagation during both cyclic and combined cyclic-static loading conditions was directly dependent on the extent of matrix deformation as reflected by the mode of crack propagation. The results are consistent with the activation of either grain boundary or matrix mechanisms for deformation, as related to loading conditions, at the temperature investigated. The influence of neutron irradiation was to alter the operation of the basic deformation mechanisms by the increased difficulty of matrix dislocation motion resulting from the irradiation-induced defect production.},
doi = {},
url = {https://www.osti.gov/biblio/5616725}, journal = {Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)},
number = ,
volume = 782,
place = {United States},
year = {1982},
month = {1}
}

Conference:
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