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Nucleation centers and wave schemes of martensite growth in iron alloys

  • Solid State Physics
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Abstract

The relationship between the geometry of defects, wave schemes of growth of a martensite crystal (MC), and the orientation of the habit plane of the MC is discussed within the framework of the concept of heterogeneous nucleation. It is shown for Fe-Ni and Fe-Mn systems that a growth scheme governed by quasi-longitudinal waves is consistent with the model of a cylindrical nucleus oriented near the <110> and <211> (or <001>) directions characteristic of straight austenite dislocation lines. The possibility of influencing the course of the transformation by simulating nucleation on the surface of austenite is indicated. With regard to the system Fe-Mn, a description is offered of the transverse growth of a martensite plate for a two-dimensional nucleation center in a scheme which includes both longitudinal and transverse waves. The use of the wave approach to describe the growth of an MC in the form of a rod is discussed. Mention is made of the promise of using a nonlinear breather wave to model the dynamic state of the martensite nucleus and transverse growth of the martensite crystal.

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Authors and Affiliations

  1. Ural Wood Technology Institute, Russia

    M. P. Kashchenko & V. P. Vereshchagin

Authors
  1. M. P. Kashchenko
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  2. V. P. Vereshchagin
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 8, pp. 16–20, August, 1989.

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Kashchenko, M.P., Vereshchagin, V.P. Nucleation centers and wave schemes of martensite growth in iron alloys. Soviet Physics Journal 32, 592–595 (1989). https://doi.org/10.1007/BF00898530

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  • DOI: https://doi.org/10.1007/BF00898530

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