Abstract
The formation and post-decomposition kinetics of supercooled austenite of low-alloyed pipe steels obtained upon heating in an intercritical temperature range is investigated by velocity dilatometry. The decrease in the stability of austenite in the pearlite region after austenization in the intercritical temperature range in the grade-20FA steel in comparison with the stability of austenite obtained by heating to temperatures above \( A_{C_3 } \) is found. It is shown that austenization in the intercritical temperature range affects the decomposition of supercooled austenite of the grade-13KhFA steel in a complicated manner, namely, the temperature of the onset of austenite decomposition decreases, and the temperature of the end of transformation increases.
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Original Russian Text © A.N. Makovetskii, T.I. Tabachnikova, I.L. Yakovleva, N.A Tereshchenko, D.A. Mirzaev, 2012, published in Fizika Metallov i Metallovedenie, 2012, Vol. 113, No. 10, pp. 1035–1044.
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Makovetskii, A.N., Tabachnikova, T.I., Yakovleva, I.L. et al. Dilatometry investigation of austenite dissociation for low-alloyed pipe steel on cooling from intercritical temperature range. Phys. Metals Metallogr. 113, 982–991 (2012). https://doi.org/10.1134/S0031918X12100067
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DOI: https://doi.org/10.1134/S0031918X12100067