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The L12 to DO19 Phase Transformation In The Intermetallic Compound Fe3Ge

Published online by Cambridge University Press:  10 February 2011

Q. Z. Chen ,
A. H. W. Ngan  and
B. J. Duggan
Q. Z. Chen
Affiliation:
Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, P.R. China
A. H. W. Ngan
Affiliation:
Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong
B. J. Duggan
Affiliation:
Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong
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Abstract

A large kinetics hysteresis is found to exist between the forward and backward reactions of the L12 ↔ DO19 transformation in Fe3Ge. The slow DO19 to L12 transformation leaves behind very stable twins and stacking fault debris. In-situ annealing experiments in the transmission electron microscope revealed that nucleation for the reverse L12 to DO19 reaction takes place efficiently at these defects.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 481: Symposium P – Science and Technology of Semiconductor Surface Preparation , 1997 , 225
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

[1] Ngan, A. H. W., Jones, I. P. and Smallman, R. E., Phil. Mag. A, 65, p. 1003 (1992).Google Scholar
[2] Chen, Q. Z., Ngan, A. H. W. and Duggan, B. J., Intermetallics, in press.Google Scholar
[3] Fujita, H. and Ueda, S., Acta Metall., 20, p. 759 (1972).Google Scholar