The reversibility of the austenite (gamma) to allotriomorphic ferrite (alpha) transformation has been investigated with a view to assessing the hysteresis. It is confirmed that the transformation can be easily reversed, a reflection of the fact that the mechanism of transformation ensures that the transformation products when they first form are close to equilibrium. The hysteresis has been shown to be much smaller than is found to be the case with the bainite reaction. Furthermore, the formation of austenite occurs with a much smaller hysteresis than that of ferrite, because the former transformation tends to occur at higher temperatures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1994, Vol.186, No.1- 2, pp.157-162
This file is reprinted from Materials Science and Engineering with permission from Elsevier Science. Single copies of the article can be downloaded and printed for the reader's personal research and study.
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