Dynamic Model of Spatial Scaling of the Initial Excited State upon Reconstructive Martensitic Transformations

In the dynamic theory of martensitic transformations, the possibility of rapid spatial scaling of the excited state, accompanied by an increase in the transverse size of the region of the initial excited state, was postulated. In this work, it is shown that this postulate corresponds to the process...

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Bibliographic Details
Published inPhysics of metals and metallography Vol. 122; no. 9; pp. 834 - 840
Main Authors Kashchenko, M. P., Kashchenko, N. M., Chashchina, V. G.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2021
Springer
Springer Nature B.V
Subjects
Chemistry and Materials Science
Cylindrical waves
Dynamic models
Excitation
Martensitic transformations
Materials Science
Metallic Materials
Theory of Metals
Wave propagation
transformation of nanograins
initial excited state
martensitic transformations
dynamic theory
dislocation nucleation centers
cylindrical wave
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Summary:In the dynamic theory of martensitic transformations, the possibility of rapid spatial scaling of the excited state, accompanied by an increase in the transverse size of the region of the initial excited state, was postulated. In this work, it is shown that this postulate corresponds to the process of propagation of a cylindrical wave, which makes it possible to translate information on the type of threshold strain from the nanoscale to the micron level. This model allows one to give a qualitative description of not only the completely twinned midrib of lenticular crystals, but also the partially twinned zone framing the midrib. Another fundamental conclusion is made about the martensitic transformation of austenite nanograins as a whole during the propagation of a cylindrical wave.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X21090052