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Time and Space Instabilities in Binary Alloys at Phase Transitions Under Irradiation

Published online by Cambridge University Press:  15 February 2011

V. V. Mikhailovskiy ,
K. C. Russell  and
V. I. Sugakov
V. V. Mikhailovskiy
Affiliation:
Institute for Nuclear Research, Ukrainian Academy of Sciences, Kiev, Ukraine, 252028
K. C. Russell
Affiliation:
Massachusetts Institute of Technology, Cambridge, MA 02139, [email protected]
V. I. Sugakov
Affiliation:
Institute for Nuclear Research, Ukrainian Academy of Sciences, Kiev, Ukraine, 252028
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Abstract

A manifestation of antisite defects created by nuclear irradiation in binary ordered alloys is investigated. Calculations show that the concentration of such defects can be large at typical values of intensity of irradiation and temperature. The appearance of structural defects can cause the time and space instabilities in crystal during irradiation. Time instabilities are connected with the acceleration of antisite defect relaxation due to the heat that is released during this relaxation. The instability leads to appearance of self-oscillations of defect density and temperature of crystal. Space instability arises due to interaction between defects created by irradiation. It leads to spatial periodical modulation of antisite defect density.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 540: Symposium N / Microstructural Processes in Irradiated Materials , 1998 , 667
Copyright
Copyright © Materials Research Society 1999

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