Effects of irradiation on crack-arrest toughness of two high-copper welds

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6239773

Iskander, S K; Corwin, W R; Nanstad, R K

The objective of this study is to determine the effect of neutron irradiation on the shift and shape of the lower-bound curve to crack-arrest data. Two submerged-arc welds with copper contents of 0.23 and 0.31 wt % were commercially fabricated in 220-mm-thick plate. Crack-arrest specimens fabricated from these welds were irradiated at a nominal temperature of 288{degree}C to an average fluence of 1.9 {times} 10{sup 19} neutrons/cm{sup 2} (>1 MeV). A preliminary evaluation of the results shows that the neutron-irradiation induced crack-arrest toughness temperature shift is about the same as the Charpy V-notch impact temperature shift at the 41-J energy level. The shape of the lower-bound curves, (for the range of test temperatures covered), compared to those of the ASME K{sub Ia}-curve did not seem to have been altered by irradiation. 10 refs., 9 figs., 7 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: NRC
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6239773
• Report Number(s): CONF-900623-25; ON: DE91007189
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360106 -- Metals & Alloys-- Radiation Effects
ALLOYS
ARC WELDING
CHARPY TEST
CONTAINERS
COPPER ADDITIONS
COPPER ALLOYS
CRACK PROPAGATION
DESTRUCTIVE TESTING
EMBRITTLEMENT
FABRICATION
FRACTURE PROPERTIES
IMPACT TESTS
IRON ALLOYS
IRON BASE ALLOYS
IRRADIATION
JOINING
JOINTS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
NEUTRON FLUENCE
PHYSICAL RADIATION EFFECTS
PRESSURE VESSELS
RADIATION EFFECTS
STEELS
SUBMERGED ARC WELDING
TESTING
WELDED JOINTS
WELDING