Détail de la notice
Titre du Document
A TTT-diagram for α → β transformation of unalloyed plutonium
Auteur(s)
ABRAMENKO S. I. ; ZUYEV Y. N. ; KORDYUKOV V. N. ; ...
Corporation(s) du ou des auteurs
American Nuclear Society La Grange Park, Illinois USA (Organisateur de congrès); Quantum Design Company San Diego, CA USA (Organisateur de congrès); FEI Company Hillsboro, Oregon USA (Organisateur de congrès)
Résumé
The paper offers a variant of the generalized TTT-diagram (temperature-time-transition) for the α → p transformation of unalloyed plutonium under isothermal conditions. The authors constructed it using published information on plutonium phase transformation kinetics under isothermal conditions and α → β transformation parameters under the conditions of pulsed electric heating. The authors also present their results-parameters of the beginning of the α → p transformation in isothermal conditions and in linear-through-volume heating by neutrons from pulsed nuclear reactors exploited at RFNC-VNIITF. Using a number of typical TTT-diagrams as examples, the authors demonstrate characteristic features in the dependence of the phase transformation incubation time on plutonium temperature in isothermal conditions (for example, in samples hold in oil) and in electric heating conditions. They identify segments where, in the authors' view, phase transformation conditions were not isothermal and justify the use of the most authentic experimental data including those obtained by the authors for isothermal conditions for the construction of the generalized TTT-diagram. To justify the use of their own results obtained for the uniform-through-volume heating of samples by neutrons, the authors used known theoretical results for non-isothermal first-kind transition kinetics. Theoretical results suggest that for certain conditions of the first-kind transition, it is possible to relate
Editeur
Elsevier
Type du document
Conférence : Plutonium Futures-The Science 2006 Conference, 4, Pacific Grove, California, USA, 2006-07-09
Identifiant
ISSN : 0925-8388
Source
Journal of alloys and compounds A. 2007, vol. 444-445, pp. 207-211 [5 pages] [bibl. : 10 ref.]
Langue
Anglais
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