Abstract
The method of electron microscopy is used to study the fine structure of martensitic steel 17Kh4N2M2VF when subjected to rapid thermocyclic tempering. It is found that substructural and phase transformations take place in martensite due to repeated rapid temperature changes within the range 20–700°C. The phase transformations involve the decomposition of cementite and residual austenite and the formation of special carbides. The substructural changes are connected with fragmentation of the material. The density of high-angle fragment boundaries increases near the specimen surface along with scalar and excess dislocation density. The phase structural transformations entail the formation of long-range stress fields, the local relaxation of which leads to the development of microcracks and fracture of the material.
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References
P. Hirsch, R. Hovi, R. Nicholson, et al., Electron Microscopy of Thin Crystals [Russian translation], Mir, Moscow (1968).
K. S. Chernyavskii, Stereology in Physical Metallurgy [in Russian], Metallurgiya, Moscow (1977).
N. A. Koneva, É. V. Kozlov, L. I. Trishkina, and D. V. Lychagin, New Methods in the Physics and Mechanics of Deformable Bodies [in Russian], TGU, Tomsk (1990), pp. 83–93.
Yu. F. Ivanov and É. V. Kozlov, Fiz. Met. Metalloved., No. 11, 202–205 (1991).
V. A. Likhachev, Models of Continuum Mechanics [in Russian], Novosibirsk (1983), pp. 255–277.
V. I. Trefilov, Yu. V. Mil'man, R. K. Ivashchenko, et al., Structure, Texture, and Mechanical Properties of Deformable Molybdenum Alloys, Naukova Dumka, Kiev (1983).
V. I. Trefilov, V. F. Moiseev, E. P. Pechkovskii, et al., Strain-Hardening and Fracture of Polycrystalline Metals [in Russian], Naukova Dumka, Kiev (1989).
N. D. Bega, A. N. Rakitskii, E. V. Turtsevich, et al., Metallofizika,12, No. 4, 21–28 (1990).
V. V. Gorskii, Yu. Ya. Meshkov, V. P. Temnenko, et al., ibid.,12, No. 2, 53–57 (1990).
L. M. Sheludchenko, V. V. Tikhonovich, V. V. Gorskii, et al., ibid.,12, No. 3, 89–97 (1990).
S. P. Vorona, T. T. Evseeva, V. F. Mazanko, et al., ibid.,12, No. 5, 3–6 (1990).
D. S. Gertsriken, A. I. Ignatenko, V. F. Mazanko, et al., ibid.,12, No. 2, 67–71 (1990).
A. F. Zhuravlev, B. F. Zhuravlev, V. F. Mazanko, and V. M. Fal'chenko, ibid.,12, No. 4, 8–10 (1990).
O. V. Klyavin, Physics of the Plastic Deformation of Crystals at Helium Temperatures, Nauka, Moscow (1987).
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Tomsk State Architectural-Construction Academy. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 36–42, February, 1994.
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Kozlov, É.V., Veter, V.V., Popova, N.A. et al. Effect of rapid thermocyclic tempering on substructure, phase composition, and the initiation of fracture in a martensitic steel. Russ Phys J 37, 137–142 (1994). https://doi.org/10.1007/BF00559059
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DOI: https://doi.org/10.1007/BF00559059