Abstract
An investigation has been conducted into the influence of hot rolling on the microstructure of austenite in both a low alloy (transformable) and an austenitic stainless steel. Specimens of each steel were reheated and then given a single 50 pct reduction at various temperatures, after which the specimens were water quenched. The specimens were analyzed using optical, transmission electron and X-ray metallography. The results of these experiments showed that both steels exhibited equiaxed grains after high temperature rolling, elongated grains after low temperature rolling and a mixture of both types of grains after rolling at intermediate temperatures. One of the principal goals of this work was to study the origin of the equiaxed grains that result from high temperature rolling. Information obtained from dislocation observations and texture analysis has led to the conclusion that the mechanism most likely responsible for the equiaxed grains in as-rolled austenite is dynamic recrystallization.
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I. Kozasu, C. Ouchi, T. Sampei and T. Okita:Microalloying ’75, M. Korchynsky, Ed., Union Carbide Corporation, New York, 1976, 120.
T. G. Oakwood, W. E. Heitmann and E. S. Madrzyk:The Hot Deformation of Austenite, J. Ballance, Ed., TMS—AIME, New York, 1977, 204.
E. L. Brown, A. J. DeArdo and J. H. Bucher:Ibid., 250.
J. G. Byrne:Recovery, Recrystallization and Grain Growth, MacMillan, New York, 1965, 60.
J. J. Jonas, C. M. Sellars and W. J. McG. Tegart:Met Rev., 1969, vol. 14, p. 1.
H. J. McQueen and J. J. Jonas:Plastic Deformation of Metals, vol, 6, R. J. Arsenault, Ed., Academic Press, New York, 1975, p. 393.
R. A. P. Djaic and J. J. Jonas:Metall. Trans., 1973, vol. 4, p. 621.
A. LeBon, J. Rofes-Vernis and C. Rossard:Met. Sci. J., 1975, vol. 9, p. 36.
U. KostenMetal Sci., 1974, vol. 8, p. 151.
H. Ahlborn, E. Hornbogen and U. Koster:J. Mater. Sci., 1969, vol. 4, p. 944.
E. L. Brown: Department of Metallurgical and Materials Engineering, University of Pittsburgh, Pittsburgh, PA, Ph.D. thesis, 1979.
I. L. Dillamore and W. T. Roberts:Met. Rev., 1965, vol. 10, p. 39.
A. Jones and B. Walker:Metal Science, 1974, vol. 8, p. 397.
G. J. Davies, D. S. Kallend and P. P. Morris:The Hot Deformation of Austenite, J. Ballance, Ed., TMS—AIME, New York, 1977, p. 599.
G. V. Kurdjumov and G. Sachs:Z. Physik, 1930, vol. 64, p. 325.
C. G. Dunn and J. L. Walter:Recrystallization, Grain Growth and Textures, H. Margolin, Ed., ASM, Metals Park, Ohio, 1966, p. 461.
R. W. K. Honeycombe and R. W. Pethen:J. Less Common Metals, 1972, vol. 28, p. 201.
J. H. McQueen, R. Petkovic, H. Weiss and L. G. Hinton:Hot Deformation of Austenite, J. Ballance, Ed., TMS—AIME, New York, 1977, p. 113.
M. Blicharski and S. Gorczyca:Metal Sci., 1978, vol. 12, p. 303.
S. R. Goodman and H. Hu:Trans. TMS—AIME, 1964, vol. 230, p. 1413.
B. D. Cullity:Elements of X-ray Diffraction, First Edition, p. 259, Addison Wesley, Reading, Mass., 1956.
R. E. Smallman:J. Inst. Metals, 1955-56, vol. 84, p. 10.
J. W. Christian and P. R. Swann:Alloying Behavior and Effects in Concentrated Solid Solution, 105, Gordon and Breach, New York, 1965.
H. Hu and S. R. Goodman:Trans. TMS—AIME, 1963, vol. 227, p. 627.
H. Hu and S. R. Goodman:Ibid., p. 1454.
S. R. Goodman and H. Hu:Ibid., p. 103.
J. Grewen and M. V. Helmendahl:Z. Metallic., 1968, vol. 59, p. 205.
R. Cahn:Recrystallization, Grain Growth and Textures, p. 99, H. Margolin, Ed., ASM, Metals Park, Ohio, 1966.
J. E. Bailey and P. B. Hirsch:Proc. Roy. Soc. (London), 1962, vol. A267, p. 11.
R. Cahn:Physical Metallurgy, Second Edition, p. 1129, R. Cahn, Ed., North Holland, Amsterdam, 1970.
L. C. Michaels and B. G. Ricketts:Trans. TMS—AIME, 1967, vol, 239, p. 1841.
H. Hu:Recovery and Recrystallization of Metals, p. 311, L. Himmel, Ed., Interscience, New York, 1963.
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Formerly a Graduate Student, University of Pittsburgh
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Brown, E.L., Deardo, A.J. On the origin of equiaxed austenite grains that result from the hot rolling of steel. Metall Trans A 12, 39–47 (1981). https://doi.org/10.1007/BF02648506
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DOI: https://doi.org/10.1007/BF02648506