Analysis of Phase Transformations of Supercooled Austenite in Low-Alloy Steel with Boron Additives

Adiagram of transformations in low-alloy boron-containing steel B27 with high resistance to abrasive wear is plotted under continuous cooling. Chemical, metallographic and dilatometric analyses are performed, and the hardness of the steel is measured. Continuous cooling curves are obtained from the temperature of austenitization at a rate of 0.17 – 25 K/sec in the temperature range of 800 – 500°C.