Void growth and vacancy migration enthalpy in alpha-iron
- 1 January 1983
- journal article
- other
- Published by Taylor & Francis in Radiation Effects
- Vol. 77 (1) , 49-55
- https://doi.org/10.1080/00337578308224721
Abstract
The migration enthalpy of monovacancies in α-Fe, H1vm, is deduced from the growth of voids during electron irradiation as studied by Kitajima and co-workers in a high-voltage electron microscope. In this way H1vM = (1.3+0.1−0.3) eV is obtained, in excellent agreement with H1VM = (1.28±0.25) eV as deduced by Schaefer et al. from high-temperature equilibrium experiments. The disagreement between H1VM and H111= (0.55±0.05) eV, the activation enthalpy in recovery stage III of %aL-Fe after irradiation or cold-work, excludes the one-interstitial model but is in accordance with the two-interstitial model of point defects in metals.Keywords
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