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

Conference · Fri Jan 01 00:00:00 EST 1982 · Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)

OSTI ID:5616725

Michel, D J; Smith, H H

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.

• Research Organization: Naval Research Lab., Washington, DC
• OSTI ID: 5616725
• Report Number(s): CONF-820628-
• Journal Information: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States), Vol. 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

Related Subjects

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