Abstract
In the dynamic theory of martensitic transformations, the wave mechanism of controlling martensite crystal growth is determined by the superposition of wave beams of quasi-longitudinal (or longitudinal) waves carrying the “tensile–compression” deformation in the orthogonal directions. The wave beam formation is considered to be a result of the formation of excited (vibrational) states. The existence of transformation twins is interpreted as a result of a matched propagation with respect to long-wave (l waves) and short-wave (s waves) shifts. The matching condition is analyzed for the γ–α martensitic transformation in iron-base alloys. It is shown for the first time that the transition to a degenerate twin structure with the allowance for the medium discreteness enables one to estimate the dislocation density in crystals with habit {557}, which agrees with that observed experimentally.
Similar content being viewed by others
REFERENCES
G. V. Kurdyumov, L. M. Utevskii, and R. I. Entin, Transformations in Iron and Steel (Nauka, Moscow, 1977) [in Russian].
M. P. Kashchenko, The Wave Model of Martensite Growth in the Case of γ–α Transformations in Iron-Based Alloys, 2nd ed. (Regul. Khaotich. Dinam., Moscow, Izhevsk, 2010) [in Russian].
M. P. Kashchenko and V. G. Chashchina, A Dynamic Model of the Formation of Twin Martensitic Crystals at γ–α Transformations in Iron-Based Alloys (Ural. Gos. Lesotekh. Univ., Yekaterinburg, 2009) [in Russian].
M. P. Kashchenko and V. G. Chashchina, Phys. Usp. 54, 331 (2011).
H. Warlimont and L. Delay, Martersitic Transformations in Copper-, Silver- and Gold-Based Alloys (Pergamon, Oxford, 1974).
M. A. Shtremel’, The Strength of Alloys. Part. 2: Deformation (MISIS, Moscow, 1997) [in Russian].
M. P. Kashchenko, V. G. Chashchina, and S. V. Vi-kharev, Phys. Met. Metallogr. 110, 200 (2010).
M. P. Kashchenko, V. G. Chashchina, and S. V. Vi-kharev, Phys. Met. Metallogr. 110, 305 (2010).
M. P. Kashchenko and V. G. Chashchina, Phys. Met. Metallogr. 114, 821 (2013).
M. P. Kashchenko, I. F. Latypov, and V. G. Chashchina, Lett. Mater. 7, 146 (2017).
M. P. Kashchenko and V. G. Chashchina, Phys. Met. Metallogr. 118, 311 (2017).
M. P. Kashchenko, N. M. Kashchenko, and V. G. Cha-shchina, Mater. Today 4, 4605 (2017).
M. P. Kashchenko, N. M. Kashchenko, and V. G. Cha-shchina, Phys. Met. Metallogr. 119, 1 (2018).
M. P. Kashchenko, N. M. Kashchenko, and V. G. Cha-shchina, Lett. Mater. 8, 429 (2018).
F. I. Fedorov, Theory of Elastic Waves in Crystals (Nauka, Moscow, 1965) [in Russian].
G. Haush and H. Warlimont, Acta Met. 21, 400 (1973).
E. D. Hallman and B. N. Brockhouse, Can. J. Phys. 47, 1117 (1969).
T. V. Eterashvili, L. M. Utevskii, and M. N. Spasskii, Fiz. Met. Metalloved. 49, 807 (1979).
D. P. Rodionov and V. M. Schastlivtsev, Steel Single Crystals (UrO RAN, Yekaterinburg, 1996) [in Russian].
V. P. Vereshchagin, M. P. Kashchenko, S. V. Konovalov, and T. N. Yablonskaya, Fiz. Met. Metalloved. 77, 173 (1994).
M. P. Kashchenko, V. V. Letuchev, S. V. Konovalov, and T. N. Yablonskaya, Phys. Met. Metallogr. 83, 237 (1997).
V. G. Chashchina, Russ. Phys. J. 52, 766 (2009).
M. P. Kashchenko, N. A. Skorikova, and V. G. Cha-shchina, Phys. Met. Metallogr. 106, 219 (2008).
ACKNOWLEDGMENTS
The authors are grateful to participants of the XXI Winter School on the Mechanics of Continua (Perm, Febru-ary 18–22, 2019) and the International Conference MGCTF-2019 (St. Petersburg, July 1–5, 2019) for discussion of the results.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors declare that they have no conflicts of interest.
Additional information
Translated by Yu. Ryzhkov
Rights and permissions
About this article
Cite this article
Kashchenko, M.P., Kashchenko, N.M. & Chashchina, V.G. Degenerate Structure of Transformation Twins and Estimation of Dislocation Density in Martensite Crystals. Phys. Solid State 61, 2254–2259 (2019). https://doi.org/10.1134/S1063783419120187
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063783419120187