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Dissolution of Copper Precipitates in An Fe−1·3Wt%Cu Alloy Under Fe+ Ion Irradiation

Published online by Cambridge University Press:  15 February 2011

A. C. Nicol
Affiliation:
Department of Materials, University of Oxford, Parks Rd., Oxford OXI 3PH, UK
M. L. Jenkins
Affiliation:
Department of Materials, University of Oxford, Parks Rd., Oxford OXI 3PH, UK
N. Wanderka
Affiliation:
Hahn-Meitner-Institut Berlin, Glienicker Strasse 100, D-14109 Berlin, Germany
C. Abromeit
Affiliation:
Hahn-Meitner-Institut Berlin, Glienicker Strasse 100, D-14109 Berlin, Germany
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Abstract

The stability of Cu precipitates in an Fe-1.3wt%Cu alloy under 300 keV Fe+ion irradiation has been investigated using transmission electron microscopy and high-resolution electron microscopy. The irradiations were carried out between room temperature and 550°C at displacement rates of 103 to 10−2 dpa(s)−1 to fluences of up to 30 dpa. Copper precipitates were found to keep their shape but decrease in size under all irradiation conditions. The results are discussed within the framework of a competitive process between irradiation induced ballistic destruction of precipitates by cascades and irradiation-enhanced precipitation.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

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