Positron annihilation studies of electron-irradiated F82H model alloys

Irradiation-induced vacancy defects in F82H model alloys were studied using positron lifetime measurements. It is shown that the presence of Cr and carbides in iron-based alloys prevents the formation of vacancy clusters. Divacancies are stabilized at room temperature by adding Cr to Fe. The suppres...

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Bibliographic Details
Published in:Journal of nuclear materials 2013-09, Vol.440 (1-3), p.617-621
Main Authors: Huang, S.S., Yoshiie, T., Xu, Q., Sato, K., Troev, T.D.
Format: Article
Language:English
Subjects:
Alloys
Applied sciences
Chromium
Clusters
Controled nuclear fusion plants
Energy
Energy. Thermal use of fuels
Evolution
Exact sciences and technology
Ferritic stainless steels
Ferrous alloys
Fission nuclear power plants
Fuels
Installations for energy generation and conversion: thermal and electrical energy
Intermetallic compounds
Martensitic stainless steels
Nuclear fuels
Swelling
Vacancies
Voids
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Summary:Irradiation-induced vacancy defects in F82H model alloys were studied using positron lifetime measurements. It is shown that the presence of Cr and carbides in iron-based alloys prevents the formation of vacancy clusters. Divacancies are stabilized at room temperature by adding Cr to Fe. The suppression of void swelling by Cr can be explained by existing models. During the incubation period, elements such as W, V, and Ta have little effect on the evolution of point defect clusters in Fe–Cr based alloys those do not contain C. M23C6 plays an important role on void swelling resistance.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2013.05.015