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Fracture resistance of HT-9 after irradiation at elevated temperature

Conference · · Annu. Book ASTM Stand.; (United States)
OSTI ID:6187086
HT-9, a 12 percent chromium martensitic stainless steel of interest for use in ducts for fast reactors and as a first-wall material in magnetic fusion reactors, was irradiated in the Experimental Breeder Reactor II to obtain the first evaluation of fracture toughness changes produced by high-temperature/high-fluence irradiation in this class of alloy. Charpy V-notch, precracked Charpy, and tension specimens were used to evaluate the tensile and fracture behavior of this steel in the as-received condition, after 5000 h of aging at 427 and 538/degree/C and a 108 deg C shift in the ductile-to-brittle transition after irradiation at 419/degree/and a 108 deg C shift in the ductile-to-brittle transition after irradiation at 419/degree/C. Possible mechanisms for the observed response are discussed.
Research Organization:
US Nav Res Lab, Washington, DC, USA
OSTI ID:
6187086
Report Number(s):
CONF-800609-
Conference Information:
Journal Name: Annu. Book ASTM Stand.; (United States)
Country of Publication:
United States
Language:
English