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Electron Microscopy of Ordering Related Defects in Alloys.

Published online by Cambridge University Press:  21 February 2011

D. Broddin ,
C. Leroux  and
G. Van Tendeloo
D. Broddin
Affiliation:
University of Antwerp, RUCA, Groenenborgerlaan 171, B-2020,Antwerp, Belgium
C. Leroux
Affiliation:
University of Antwerp, RUCA, Groenenborgerlaan 171, B-2020,Antwerp, Belgium NCEM Lawrence Berkeley Lab., Univ. of California, CA 94720, USA
G. Van Tendeloo
Affiliation:
University of Antwerp, RUCA, Groenenborgerlaan 171, B-2020,Antwerp, Belgium
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Abstract

Recent results are presented which indicate that the core structure of anti-phase boundaries is sensitive to changes in temperature and alloy composition. Isolated anti-phase boundaries in CoPt3 are found to undergo a structural change when the order-disorder transition temperature is approached from below. Periodic anti-phase boundaries of the long period structures in Cu3Pd, Au3Zn and Au3Cu exhibit similar phenomena. Detailed results on the core structure of periodic boundaries in alloys annealed close to the order-disorder transition are compared to the results of a Monte Carlo analysis for finite temperatures of (100) anti-phase boundaries in L12 alloys.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 183: Symposium E – High Resolution Electron Microscopy of Defects in Materials , 1990 , 27
Copyright
Copyright © Materials Research Society 1990

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References

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