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Title: Deformation microstructure developed during fatigue crack propagation in Type 316 stainless steel at 593 C. Memorandum report

Abstract

The failure modes and dislocation substructure produced by fatigue crack propagation at 593 C in fast neutron irradiated and unirradiated Type 316 stainless steel were studied. The results indicate that the dislocation substrate 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 (USA)
OSTI Identifier:
5726653
Report Number(s):
AD-A-095387
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; STAINLESS STEEL-316; MICROSTRUCTURE; PHYSICAL RADIATION EFFECTS; CRACK PROPAGATION; DEFORMATION; FAST NEUTRONS; HIGH TEMPERATURE; ALLOYS; BARYONS; CHROMIUM ALLOYS; CHROMIUM STEELS; CHROMIUM-NICKEL STEELS; CORROSION RESISTANT ALLOYS; CRYSTAL STRUCTURE; ELEMENTARY PARTICLES; FERMIONS; HADRONS; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS; MOLYBDENUM ALLOYS; NEUTRONS; NICKEL ALLOYS; NUCLEONS; RADIATION EFFECTS; STAINLESS STEELS; STEELS; 360106* - Metals & Alloys- Radiation Effects; 360102 - Metals & Alloys- Structure & Phase Studies

Citation Formats

Michel, D J, and Smith, H H. Deformation microstructure developed during fatigue crack propagation in Type 316 stainless steel at 593 C. Memorandum report. United States: N. p., 1981. Web.
Michel, D J, & Smith, H H. Deformation microstructure developed during fatigue crack propagation in Type 316 stainless steel at 593 C. Memorandum report. United States.
Michel, D J, and Smith, H H. Mon . "Deformation microstructure developed during fatigue crack propagation in Type 316 stainless steel at 593 C. Memorandum report". United States.
@article{osti_5726653,
title = {Deformation microstructure developed during fatigue crack propagation in Type 316 stainless steel at 593 C. Memorandum report},
author = {Michel, D J and Smith, H H},
abstractNote = {The failure modes and dislocation substructure produced by fatigue crack propagation at 593 C in fast neutron irradiated and unirradiated Type 316 stainless steel were studied. The results indicate that the dislocation substrate 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/5726653}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {2}
}

Technical Report:
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