Irradiation-induced low-temperature creep of ds copper alloy

The data are presented on in-pile creep of dispersion strengthened (DS) copper alloys MAGT 0.2 (Cu-0.2Al 2 O 3 ). The experiment was performed in the SM-2 reactor in the Core position at T irr ∼ 80°C and a dose of 5dpa. Pipe samples loaded by inner helium pressure were irradiated for 41.2 days. Meas...

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Bibliographic Details
Published in:Plasma devices and operations 1999-09, Vol.7 (4), p.313-325
Main Authors: Pokrovsky, A. S., Fabritsiev, S. A., Barabash, V. R., Hamilton, M. L., Edwards, D. J., Eiholzerand, C. R., Garner, F. A.
Format: Article
Language:English
Subjects:
Copper alloys
in-pile creep
neutron irradiation
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Summary:The data are presented on in-pile creep of dispersion strengthened (DS) copper alloys MAGT 0.2 (Cu-0.2Al 2 O 3 ). The experiment was performed in the SM-2 reactor in the Core position at T irr ∼ 80°C and a dose of 5dpa. Pipe samples loaded by inner helium pressure were irradiated for 41.2 days. Measurements of the pipe diameter after irradiation demonstrated that a low-temperature creep is observed in the DS alloy MAGT 0.2, the rate of which at a hoop stress of 117MPa is as high as 2 × 10 −9 s −1 . The results of TEM investigations of the irradiated specimens structure are presented. The analysis of the obtained results and their comparison with the available data on creep of copper alloys in the unirradiated state allowed for the conclusion that irradiation inereases essentially the creep of DS copper alloys. This effect is to be taken into account when estimating the life time of the ITER components and units.
ISSN:1051-9998
1029-4929
DOI:10.1080/10519999908224475