The evolution of copper precipitates in binary FeCu alloys during ageing and irradiation

S. I. Golubov, Yu N. Osetsky, A. Serra, A. V. Barashev

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Abstract

The evolution of copper precipitates in FeCu alloys during thermal ageing and irradiation, assuming the domination of Ostwald ripening, has been theoretically investigated. It is assumed that copper atoms diffuse via a vacancy mechanism and copper clusters are homogeneously nucleated. The diffusion coefficient and the binding energy of copper atom with a cluster as a function of cluster size, that fit satisfactorily the available experimental data for thermally aged FeCu alloys, have been obtained. It was taken into account that the crystal lattice of copper precipitates changes from bee at small sizes to fee at large ones via an intermediate martensitic stage. The results of calculations are in agreement with the observed evolution of copper precipitates in FeCu alloys during thermal ageing and irradiation.

Original languageEnglish
Pages (from-to)252-255
Number of pages4
JournalJournal of Nuclear Materials
Volume226
Issue number1-2
DOIs
StatePublished - Oct 1995
Externally publishedYes

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