Abstract
In this work, we have considered different variants of the formation of martensite crystals upon the α–ε transformation caused by the deformation of planes {112}α that leads to the symmetry of atomic arrangement typical of the basal planes {0001} ε of the ε phase within the dynamic theory of martensitic transformations. It has been shown that there are dislocation nucleation centers that facilitate the start of the wave process responsible for the initiation of this deformation. The relatively rarely observed parallelism of three planes of different phases, namely, {112}α || {0001}ε || {112}γ, is interpreted as a consequence of the rapidly arising unstable intermediate state, which leads to the formation of coherently matched crystals of the γ and ε phases. The opportunity of the existence of the lattice parameter \({a_{{\varepsilon _2}}}\) that exceeds the lattice parameter of the α phase is noted.
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References
M. P. Kashchenko and V. G. Chashchina, “Dynamic model of supersonic martensitic crystal growth,” Phys.Usp. 54, 331–349 (2011).
M. P. Kashchenko and V. G. Chashchina, “Martensitic crystal formation in the limiting case of supersound speed growth,” Pis’ma Mater. 1, 7–15 (2011).
M. P. Kashchenko and V. G. Chashchina, “Fundamental achievements of the dynamic theory of reconstructive martensitic transformations,” Mater. Sci. Forum 738–739, 3–9 (2013).
M. P. Kashchenko, Wave Model of Martensitic Growth at γ–α Transformation in Iron-Based Alloys, 2nd ed. (NITs “Regul. i Khat. Dinam.” Izhevsk. Inst. Komp’yut. Tekhnol., Izhevsk, 2010) [in Russian].
M. P. Kashchenko and V. G. Chashchina, “Crystal dynamics of the bcc–hcp martensitic transformation: I. Controlling wave process,” Phys. Met. Metalogr. 105, 537–543 (2008).
M. P. Kashchenko and V. G. Chashchina, “Crystal dynamics of the bcc–hcp martensitic transformation: II. Morphology,” Phys. Met. Metallogr. 106, 14–23 (2008).
M. P. Kashchenko and V. G. Chashchina, Dynamic Model of Twinned Martensitic Crystals at γ–α Transformation in Iron Alloys (UGLTU, Ekaterinburg, 2009) [in Russian].
M. P. Kashchenko and V. G. Chashchina, “Dynamic theory of morphological characteristics of ε and γ phase crystals, including Headley–Brooks orientation relationships at α–ε and γ–ε-α martensitic transformations,” Phys. Met. Metallogr. (2015), see this issue.
I. G. Kabanova, V. V. Sagaradze, N. V. Kataeva, and V. E. Danil’chenko, “Detection of the e phase and the Headley–Brooks orientation relationships upon α–γ transformation in the Fe–32% Ni alloy,” Phys. Met. Metallogr. 112, 381–388 (2011).
V. V. Sagaradze, N. V. Kataeva, I. G. Kabanova, V. A. Zavalishin, A. I. Valiullin, and M. F. Klyukina, “Structural mechanism of reverse α → γ transformation and strengthening of Fe–Ni alloys,” Phys. Met. Metallogr. 115, 661–671 (2014).
T. J. Headley and J. A. Brooks, “A New bcc–fcc orientation relationship observed between ferrite and austenite in solidification structures of steels,” Metal. Mater. Trans. A 33, 5–15 (2002).
V. G. Chashchina, “A modified dynamic model of an fcc–hcp martensitic transformation without macroshear,” Russ. Phys. J. 52, 763–765 (2009).
W. Harrison, Electronic Structure and the Properties of Solids (Freeman, San Francisco, 1980; Mir, Moscow, 1983).
D. A. Mirzaev, O. P. Morozov, and M. M. Shteinberg, “On the connection of transformations in iron and its alloys,” Fiz. Met. Metalloved. 36, 560–568 (1973).
M. P. Kashchenko, A. G. Semenovykh, and V. G. Chashchina, “The lower temperature boundary of the onset of the formation of a-martensite upon cooling in iron-based alloys,” Phys. Met. Metallogr. 95, 116–121 (2003).
M. P. Kashchenko, V. G. Chashchina, and S. V. Vikharev, “Dynamic model of the formation of twinned martensite crystals: I. Control wave process and the removal of degeneracy in twin-boundary orientation,” Phys. Met. Metallogr. 110, 200–209 (2010).
M. P. Kashchenko, V. G. Chashchina, and S. V. Vikharev, “Dynamic model of the formation of twinned martensite crystals: II. Pretransition states and relationships between the volumes of the twin components,” Phys. Met. Metallogr. 110, 305–317 (2010).
M. P. Kashchenko and V. G. Chashchina, “Key role of transformation twins in comparison of results of crystal geometric and dynamic analysis for thin-plate martensite,” Phys. Met. Metallogr. 114, 821–825 (2013).
M. P. Kashchenko and V. G. Chashchina, Proc. 13th Int. Conf. “DSMSMS-2014 (Ural Branch, Russian Academy of Sciences, Ekaterinburg, 2014), pp. 166–168.
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Original Russian Text © M.P. Kashchenko, V.G. Chashchina, 2015, published in Fizika Metallov i Metallovedenie, 2015, Vol. 116, No. 10, pp. 1019–1030.
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Kashchenko, M.P., Chashchina, V.G. Dynamic interpretation of the orientation relationships arising upon the α–ε–γ martensitic transformation via the transformation of {112}α planes. Phys. Metals Metallogr. 116, 967–978 (2015). https://doi.org/10.1134/S0031918X15100075
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DOI: https://doi.org/10.1134/S0031918X15100075