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Defect Cluster Structure and Tensile Properties of Copper Single Crystals Irradiated With 600 MeV Protons

Published online by Cambridge University Press:  15 February 2011

Yong Dai  and
Max Victoria
Yong Dai
Affiliation:
Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
Max Victoria
Affiliation:
CRPP-Ecole Polytechnique de Lausanne, Fusion Technology Materials, 5232 Villigen PSI, Switzerland
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Abstract

The defect microstructures and tensile properties of high purity copper single crystals have been studied after irradiation at room temperature with 600 MeV protons in the dose range from 10-3 to 10-1 dpa. The defect number density N of clusters shows a linear dependence with dose up to a saturation value of 4×1023 m-3, with a broad transition region between doses of 3×10-3 and 10-1 dpa. The increase in critical resolved shear stress (CRSS) induced by the irradiation is proportional to the square root of the dose, up to a dose of 7×10-3 dpa. These results are compared to those of both fission and fusion neutron irradiations, showing that in room temperature irradiations at low fluences, no recoil spectra effects can be detected.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 439: Symposium B – Microstructure Evolution During Irradiation , 1996 , 319
Copyright
Copyright © Materials Research Society 1997

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