Abstract
The effect of prior deformation on the processes of tempering and austenitizing of lath martensite was studied by using low carbon steels. The recrystallization of as-quenched lath martensite was not observed on tempering while the deformed lath martensite easily recrystallized. The behavior of austenite formation in deformed specimens was different from that in as-quenched specimens because of the recrystallization of deformed lath martensite. The austenitizing behavior (and thus the austenite grain size) in deformed specimens was controlled by the competition of austenite formation with the recrystallization of lath martensite. In the case of as-quenched (non-deformed) lath martensite, the austenite particles were formed preferentially at prior austenite grain boundaries and then formed within the austenite grains mainly along the packet, block, and lath boundaries. On the other hand, in the case of lightly deformed (30 to 50 pct) lath martensite, the recrystallization of the matrix rapidly progressed prior to the formation of austenite, and the austenite particles were formed mainly at the boundaries of fairly fine recrystallized ferrite grains. When the lath martensite was heavily deformed (75 to 84 pct), the austenite formation proceeded almost simultaneously with the recrystallization of lath martensite. In such a situation, very fine austenite grain structure was obtained most effectively.
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References
A. E. Nehrenberg:Trans. AIME, 1950, vol. 188, p. 162.
R. R. Judd and H. W. Paxton:Trans. TMS-A1ME, 1968, vol. 242, p. 206.
G. R. Speich and A. Szirmae:Trans. TMS-AIME, 1969, vol. 245, p. 1063.
N. C. Law and D. V. Edmonds:Metall. Trans. A, 1980, vol. 11A, p. 33.
C. I. Garcia and A. J. DeArdo:Metall. Trans. A, 1981, vol. 12A, p. 521.
S. Kinoshita and R. Ueda:Trans. Iron & Steel Inst. Japan, 1974, vol. 14, p. 411.
S. Matsuda and Y. Okamura:Trans. Iron & Steel Inst. Japan, 1974, vol. 14, p. 363.
R. Honma:Trans. Iron & Steel Inst. Japan, 1974, vol. 14, p. 434.
S. Matsuda and Y. Okamura:Trans. Iron & Steel Inst. Japan, 1974, vol. 14, p. 444.
S. Watanabe arid T. Kunitake:Trans. Iron & Steel Inst. Japan, 1976, vol. 16, p. 67.
M. R. Plichta and H. I. Aaronson:Metall. Trans., 1974, vol. 5, p. 2611.
I. Tamura, Y. Nariyoshi, S. Shimooka, and Y. Nakajima:J. Iron & Steel Inst. Japan, 1978, vol. 64, p. 568.
R. L. Miller:Metall. Trans., 1972, vol. 3, p. 905.
M. Enomoto and E. Furubayashi:Mater. Sci. Eng., 1976, vol. 24, p. 123.
A. R. Marder and G. Krauss:Trans. ASM, 1967, vol. 60, p. 651.
T. Maki, T. Tsuzaki, and I. Tamura:Trans. Iron & Steel Inst. Japan, 1980, vol. 20, p. 207.
B. S. Lement, B. L. Averbach, and M. Cohen:Trans. ASM, 1955, vol. 47, p. 291.
A. M. Turkalo:Trans. ASM, 1961, vol. 54, p. 344.
A. Galibois and A. Dube:Can. Met. Quart., 1964, vol. 3, p. 321.
T. Kunitake:Trans. Iron & Steel Inst. Japan, 1967, vol. 7, p. 254.
G. R. Speich:Trans. TMS-AIME, 1969, vol. 245, p. 2553.
D. Senicourt and P. R. Krahe:Electron Microscopy and Structure of Materials, G. Thomas, ed., University of California Press Ltd., London, 1972, p. 808.
R. N. Caron and G. Krauss:Metall. Trans., 1972, vol. 3, p. 2381.
M. Kehoe and P. M. Kelly:Scripta Met., 1970, vol. 4, p. 473.
I. K. B. Mishra, D. S. Sarma, and T. R. Anantharaman:Z. Metallk., 1976, vol. 67, p. 219.
N. Matsumura and M. Tokizane:J. Japan Inst. Metals, 1982, vol. 46, p. 217.
T. Swarr and G. Krauss:Metall. Trans. A, 1976, vol. 7A, p. 41.
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Tokizane, M., Matsumura, N., Tsuzaki, K. et al. Recrystallization and formation of austenite in deformed lath martensitic structure of low carbon steels. Metall Trans A 13, 1379–1388 (1982). https://doi.org/10.1007/BF02642875
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DOI: https://doi.org/10.1007/BF02642875