The influence of niobium in irradiation strengthening of dilute Zr-Nb alloys
- 1 October 1968
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 18 (154) , 763-772
- https://doi.org/10.1080/14786436808227499
Abstract
The irradiation damage configuration and yield stress response obtained in the c.p.h. α’and α phases in a Zr-2·7% Nb alloy after fast neutron irradiation have been studied as a function of pre-irradiation solute distribution. Largest yield stress increments were obtained for specimens irradiated with the solute initially in metastable solution, pre-irradiation ageing treatments reducing the yield stress response. Electron microscope studies have shown that the irradiation damage configuration was also determined by the solute super-saturation in the alloy phases, maximum strengthening being associated with a population of defect clusters or loops of < 30 Å diameter. A mechanism for the defect stabilization effect is proposed.Keywords
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