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U.S. Department of Energy
Office of Scientific and Technical Information

Irradiated Type 304 SS bend test ductility

Conference ·
OSTI ID:5649065
A series of tests were performed to determine the available bending deformation capability and ductility of preirradiated Type 304 stainless steel (SS) for core applications. This material was tested under conditions at which it exhibits less ductility than Type 316 SS or other stainless steels currently under considerations for core applications. Tensile testing of Type 304 SS with specimens from EBR-II ducts which were irradiated to fluences between 5 to 10 x 10/sup 22/ n/cm/sup 2/ (E > 0.1 MeV) revealed a significant reduction of uniform elongation (UE) and total elongation (TE), but smaller decreases in reduction of area (RA). These specimens fail with significant but very localized necking. The ductility of this material decreases with decreasing strain rate if the test temperature is above the irradiation temperature. A large reduction in ductility is caused by a change from a transgranular to an intergranular fracture mode.
Research Organization:
Westinghouse Electric Corp., Madison, PA (USA). Advanced Reactors Div.
Sponsoring Organization:
USDOE
DOE Contract Number:
AC15-76CL02395
OSTI ID:
5649065
Report Number(s):
CONF-800607--28
Country of Publication:
United States
Language:
English