Abstract
Superplastic structures have been developed in an as-cast ultrahigh carbon steel, containing 1.6% C, by heat treatment alone. The heat treatment involves quenching from high temperature (1150° C) and then repeated cycling across the A1 transformation temperature (727° C). This changes the coarse, as-cast structure to an ultrafine ferrite structure containing fine spheroidized cementite particles. An optimum structure is found after about 10 cycles and strain rate sensitivities of about 0.45 and elongations to failure of over 300% have been achieved.
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References
O. D. Sherby, B. Walser, C. M. Young andE. M. Cady Scripta Met. 9 (1975) 569.
B. Walser, E. S. Kayali andO. D. Sherby, 4th International Conference on the Strength of Metals and Alloys, Nancy, France, 1 (1976) 456.
O. D. Sherby, B. Walser, C. M. Young andE. M. Cady, United States Patent 3 951 697, 1976.
B. Walser andO. D. Sherby Met. Trans. (in press).
J. Wadsworth andO. D. Sherby Journal of Mat. Sci. 13 (1978) 2645.
T. Oyama, J. Wadsworth, M. Korchynsky andO. D. Sherby, to be presented at the 5th International Conference on the Strength of Metals and Alloys, Aachen, West Germany, August 1979.
C. A. Stickels Met. Trans. 5 (1974) 865.
R. A. Grange Met Trans. 2 (1971) 65.
A. Ball andM. M. Hutchinson Met. Sci. J. 3 (1969) 1.
M. J. Harrigan andO. D. Sherby Mater. Sci. and Eng. 7 (1971) 177.
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Kayali, E.S., Sunada, H., Oyama, T. et al. The development of fine structure superplasticity in cast ultrahigh carbon steels through thermal cycling. J Mater Sci 14, 2688–2692 (1979). https://doi.org/10.1007/BF00610640
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DOI: https://doi.org/10.1007/BF00610640