Abstract
The mechanism of recrystallization is considered from a new standpoint using the results of a study of specially prepared single-crystal molybdenum specimens and with allowance for the relation between rearrangements of dislocations in the crystal and the appearance of a new orientation of recrystallized regions. It is shown that the reorientation of recrystallized microvolumes in a crystal is determined by the axis of their bending during deformation. The suggested mechanism makes it possible to explain extreme cases of recrystallization relaxation in metals from a single standpoint, i.e., in terms of the appearance and growth of recrystallization nuclei (polycrystals and highly strained single crystals) and in terms of the instantaneous “thermal” fragmentation into large recrystallized regions (weakly strained single crystals).
Similar content being viewed by others
REFERENCES
H. Hu, “Annealing of single crystals of silicon iron,” in: Recovery and Recrystallization of Metals, Coll. Works[Russian translation], Metallurgiya, Moscow (1966), p. 273.
J. C. M. Li, “The possibility of subgrain rotation during recrystallization,” J. Appl. Phys., 33, 2958 (1962).
J. E. Bailey, Electron microscopic observations of the processes or recovery and recrystallization in riveted metals,” in: Electron Microscopy and Strength of Crystals, Coll. Works[Russian translation], Metallurgiya, Moscow (1968), p. 321.
H. Hu, “Recrystallization by coalescence of subgrains,” in: Electron Microscopy and Strength of Crystals, Coll. Works[Russian translation], Metallurgiya (1968), p. 350.
J. Martin and R. Doherty, Stability of the Microstructure of Metallic Systems[Russian translation], Atomizdat, Moscow (1978).
M. O. Cornfeld, “Formation of new grains in recrystallization,” Zh. Eksp. Teor. Fiz., No. 7, 450, (1937).
R. I. Graber, V. I. Afanas’ev, Zh. I. Dranova, et al., “Low-temperature recrystallization of tungsten single crystals,” Zh. Eksp. Teor. Fiz., No. 50, 520 (1966).
E. M. Savitskii, G. S. Burkhanov, N. N. Bokareva, et al., “Effect of initial crystallographic orientation on the recrystallization temperature of wires obtained from molybdenum single crystals,” Dokl. Akad. Nauk SSSR, No. 172, 89 (1967).
V. I. Isaichev and L. N. Larikov, “A new type of recovery in annealing of molybdenum crystals deformed by cold rolling,” Dokl. Akad. Nauk SSSR, No. 224, 320 (1975).
L. N. Larikov, V. I. Isaichev, and E. A. Maksimenko, “Recovery of single crystals of molybdenum and molybdenum-rhenium alloy in deformation by cold rolling and annealing,” in: Single Crystals of Refractory and Rare Metals, Alloys, and Compounds, Coll. Works[in Russian], Nauka, Moscow (1977), p. 177.
V. I. Isaichev, L. N. Larikov, E. A. Maksimenko, et al., “Recovery of molybdenum single crystals alloyed with rhenium, osmium, and ruthenium,” Metallofizika, Issue 76, 39 (1979).
Yu. V. Baranov, E. P. Kostyukova, and Yu. V. Zamorov, “Effect of the structure of surface layers of strained tungsten on its polygonization and recrystallization,” Fiz. Met. Metalloved., No. 49, 1039 (1980).
V. M. Vladimirov and E. L. Romanov, Disclinations in Crystals[in Russian], Nauka, Leningrad (1986).
V. A. Gladyshev and V. P. Kobyakov, “Some special features of bending deformation and subsequent annealing of single crystal molybdenum,” Fiz. Met. Metalloved., 54, 524 (1982).
V. P. Kobyakov and V. A. Gladyshev, “Effect of the degree of bending deformation on molybdenum single crystals in subsequent annealing,” Metallofizika, No. 7, 84 (1985).
V. P. Kobyakov and V. N. Taranovskaya, “Recrystallization of single crystal molybdenum deformed by deformation,” Fiz. Met. Metalloved., 73, 115 (1991).
A. A. Cottrell, “The theory of dislocations,” in: Advances in Metal Physics, Coll. Works[Russian translation], Metallurgiya, Moscow (1956), p. 155.
H. Van Bueren, Imperfections in Crystals, Amsterdam (1960).
B. Chalmers, Physical Metallurgy[Russian translation], Metallurgizdat, Moscow (1963).
J. Friedel, Dislocations, Oxford (1964).
R. W. Cahn, “Recovery and recrystallization,” in: Physical Metallurgy, Amsterdam (1965).
E. M. Savitskii and G. S. Burkhanov, Single Crystals of Refractory and Rare Metals and Alloys[in Russian], Nauka, Moscow (1972).
R. Laudise and R. Parker, The Growth of Single Crystals, Prentice Hall, New York (1970).
S. S. Gorelik, Recrystallization of Metals and Alloys[in Russian], Metallurgiya, Moscow (1978).
V. A. Hibbard and G. G. Dyne, “Polygonization,” in: Creep and Recovery, Coll. Works[Russian translation], Metallurgizdat, Moscow (1961), p. 62.
J. May, Polygonization of sapphire,” in: The Kinetics of High-Temperature Processes, Coll. Works[Russian translation], Metallurgiya, Moscow (1965), p. 57.
V. V. Pet’kov, V. P. Podorozhnyi, G. M. Bogun, et al., “High-temperature attached device for x-ray diffractometer,” Zavod. Lab., No. 50, 54 (1984).
J. Hirt and I. Lote, The Theory of Dislocations[Russian translation], Atomizdat, Moscow (1972).
E. É. Zasimchuk and V. S. Kravchenko, “Recrystallization caused by annihilation of dislocations,” Metallofizika, No. 2, 64 (1980).
Z. Gyulai, “Festigkeits und plastizitates Eigenschaften von NaCl-Nadelkristalln,” Z. Phys., No. 138, 317 (1954).
S. S. Brenner and C. R. Morelock, “The high-temperature recovery of deformed copper whiskers,” Acta Met., No. 4, 89 (1956).
F. R. N. Nabarro, “The theory of whisker dekinking,” in: Proc. Int. Conf. Dislocations and Mechanical Properties of Crystals, Lake Placid, 1956, J. Wiley & Sons Inc., New York (1957).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kobyakov, V.P. Recrystallization of a Polygonized Molybdenum Crystal: Relation Between Dislocation Rearrangements and Formation of a New Orientation. Metal Science and Heat Treatment 44, 499–504 (2002). https://doi.org/10.1023/A:1022556822501
Issue Date:
DOI: https://doi.org/10.1023/A:1022556822501