Abstract
1. For hypoeutectoid and eutectoid carbon steels the “range of annealability” to divorced pearlite may be broadened to the range of complete homogenization of austenite if it is cooled to a temperature somewhat above Ms before isothermal holding at 550–700°. As the result of sudden cooling and heating, a characteristic substructure is formed that results in the formation of divorced pearlite directly on decomposition of the supercooled austenite. 2. Diagrams of the decomposition of supercooled austenite to divorced pearlite were plotted for steels 20, 40, 60, and U8; they can be used for the development of new high-efficiency spheroidizing treatments of steel.
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