Effects of irradiation fluence and creep on fracture toughness of 347/348 stainless steel

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6614481

Haggag, F M; Server, W L; Reuter, W G; Beeston, J M

The postirradiation fracture toughness of Type 347/348 stainless steel was investigated using 5.08-mm thick three-point bend specimens tested at 427/sup 0/C. The J/sub Ic/ values were determined using the single-specimen unloading compliance technique in accordance with ASTM E 813-81. Equivalent values of plane strain fracture toughness, K/sub Ic/, were computed from experimentally determined J/sub Ic/ values for several fluence levels ranging from 2.3 to 4.8 x 10/sup 22/ n/cm/sup 2/ (E > 1.0 MeV) and for irradiation creep of 0.0, 0.6, 1.1, and 1.8%. The test matrix involved four variables: fluence, creep, helium content, and heat-to-heat variation. Results show that an interpolated trend exists, i.e., K/sub Ic/ decreases with increasing combinations of fluence, creep, and helium content. These results also suggest that irradiation creep has less effect on reducing K/sub Ic/ than has been suggested previously.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6614481
• Report Number(s): EGG-M-07684; CONF-840604-20; ON: DE84016091
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
BARYONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
ELEMENTARY PARTICLES
FERMIONS
FRACTURE PROPERTIES
HADRONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
NEUTRONS
NICKEL ALLOYS
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
NUCLEONS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
STAINLESS STEEL-347
STAINLESS STEEL-348
STAINLESS STEELS
STEELS