Investigation of Austenitization in Low Carbon Microalloyed Steel During Continuous Heating

摘要

Dilatation associated with the formation of austenite from ferrite-pearlite was calculated from equilibrium phase fraction and composition. Linear thermal expansion coefficient of ferrite required for the calculation was determined by iteration of dilatation data. A good match was obtained between the calculated and experimental dilatation curves. The calculated dilatation data were used to identify the stages of austenite formation: pearlite dissolution followed by ferrite to austenite transformation which is gradual at first before becoming rapid. (C) The Minerals, Metals & Materials Society and ASM International 2017