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Onset of recrystallization during the tensile deformation of austenitic iron at intermediate strain rates

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Abstract

The onset of recrystallization during the tensile deformation of austenitic iron has been fully documented for the temperature range 950 to 1350°C and strain-rate range 2.8 × 10-5 to 2.3 × 10-2 s-1. Representative materials are zone-refined iron, electrolytic iron, Fe−0.05 C and Fe−5.2 Mn. In general, the strain at the onset of recrystallization decreases with increasing temperature of deformation and decreasing strain rate. The postponement of recrystallization is favored by prior annealing at temperatures above 1200°C and is greatest for the Fe−5.2 Mn alloy; however, for the range of strain rates used, it is difficult to completely eliminate recrystallization. The effects of test conditions on the onset of recrystallization are discussed in terms of a nucleation process that requires a critical amount of stored energy.

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  1. Mechanical Sciences Division, Research Laboratory, U.S. Steel Corporation, 15146, Monroeville, Pa.

    P. J. Wray (Scientist)

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  1. P. J. Wray
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Wray, P.J. Onset of recrystallization during the tensile deformation of austenitic iron at intermediate strain rates. Metall Trans A 6, 1197–1203 (1975). https://doi.org/10.1007/BF02658529

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