Effects of temperature and strain rate on the low cycle fatigue properties of neutron irradiated stainless steel DIN 1. 4948
Conference
·
· Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)
OSTI ID:5836019
Low cycle fatigue (lcf specimens of stainless steel DIN 1.4948, which is similar to AISI Type 304, have been irradiated to a relatively low fluence level of maximally 5.10/sup 24/ n.m/sup -2/ (E > 0.1 MeV) at temperatures ranging from 330 to 923 K. Post-irradiation fatigue tests at the conventional strain rate (epsilon) of 3.10/sup -3/S/sup -1/, were performed at temperatures ranging from 298 to 1023K. Tests at low strain rates, ranging from 1.10/sup -6/ to 1.10/sup -3/s/sup -1/, were performed at 823 and 923 K. Irradiation hardening after the low temperature irradiations (623 K and below) caused no effect on the fatigue life. After irradiation at the higher temperatures the fatigue life was significantly reduced due to enhanced intergranular crack formation. This effect increased with increasing temperature and decreasing strain rate. The fatigue life reduction factor (N/sub f//sub unirr.//N/sub f//sub irr./) increased from a value of one at 723 K to three at 1023 K for tests with the conventional strain rate. The strain rate effect was strongest at 823 K. The post-irradiation fatigue life decreased from 2000 cycles at epsilon of 3.10/sup -3/s/sup -1/ to 90 cycles at the low strain rate of 2.10/sup -6/s/sup -1/ for tests with 1.0 percent strain range at 823 K.
- Research Organization:
- Netherlands Energy Research Foundation, Petten
- OSTI ID:
- 5836019
- Report Number(s):
- CONF-820628-
- Conference Information:
- Journal Name: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States) Journal Volume: 782
- Country of Publication:
- United States
- Language:
- English
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Conference
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Wed Mar 31 23:00:00 EST 1993
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OSTI ID:6788221
Related Subjects
36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
BARYONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
CRYSTAL STRUCTURE
ELEMENTARY PARTICLES
FAILURES
FAST NEUTRONS
FATIGUE
FERMIONS
FRACTURES
HADRONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NEUTRONS
NICKEL ALLOYS
NUCLEONS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
STAINLESS STEELS
STEEL-DIN-1-4948
STEELS
STRAIN RATE
SURFACES
TEMPERATURE DEPENDENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
BARYONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
CRYSTAL STRUCTURE
ELEMENTARY PARTICLES
FAILURES
FAST NEUTRONS
FATIGUE
FERMIONS
FRACTURES
HADRONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NEUTRONS
NICKEL ALLOYS
NUCLEONS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
STAINLESS STEELS
STEEL-DIN-1-4948
STEELS
STRAIN RATE
SURFACES
TEMPERATURE DEPENDENCE