Effects of Irradiation on Crack-Arrest Toughness of Two High-Copper Welds PDF Download

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Effects of Irradiation on Crack-Arrest Toughness of Two High-Copper Welds

Effects of Irradiation on Crack-Arrest Toughness of Two High-Copper Welds PDF Author: WR. Corwin
Publisher:
ISBN:
Category : Charpy V-notch impact toughness
Languages : en
Pages : 19

Book Description
The objective of this study was 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°C to an average fluence of 1.9 x 1019 neutrons/cm2 (> 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 KIa-curve, did not seem to have been altered by irradiation.
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