Key role of transformation twins in comparison of results of crystal geometric and dynamic analysis for thin-plate martensite

The experimental data on the ratio of transformation twins fractions for crystals of thin-plate α-martensite (with the habit planes of the {2 5 9} γ −{3 10 15} γ type) are considered. It is shown that the dynamic theory of the martensite crystals formation is free from the difficulties encountered i...

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Bibliographic Details
Published in:Physics of metals and metallography 2013-10, Vol.114 (10), p.821-825
Main Authors: Kashchenko, M. P., Chashchina, V. G.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Comparative analysis
Materials Science
Metallic Materials
Theory of Metals
Twinning (Crystallography)
Twins
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Summary:The experimental data on the ratio of transformation twins fractions for crystals of thin-plate α-martensite (with the habit planes of the {2 5 9} γ −{3 10 15} γ type) are considered. It is shown that the dynamic theory of the martensite crystals formation is free from the difficulties encountered in the formal crystal geometric approach. The intervals of parameter values that correspond to the observed fractions of the twin component, δ tw , within the same crystal are given. The absence of twinning in thin plate-like crystals, which sometimes are observed in experiments on the γ-α martensite transformation induced by strong magnetic field is discussed.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X1308005X