Evolution of the structure and properties of silicon steels in the austenite-bainite phase transition

摘要

The specific features of the structure of low-alloy silicon steels have been studied after the phase transition in the temperature range of the bainite transformation. It has been shown that the bainite transformation exhibits a pronounced two-stage character. At the first stage, the completely carbide-free bainite is formed, which contains up to 45% of residual austenite that is stable during deep cooling. The mechanical properties are studied as functions of the morphology and the carbon inhomogeneity of phases formed during the isothermal transformation in the bainite region.