Superbainita. Una nueva microestructura bainítica de alta resistencia

Abstract

In this work very recent results are shown that reveals the possibility of obtaining bainite by isothermal transformation at very low temperatures, of about 150°C, in high carbon high silicon steels. The microstructure thus obtained is a mixture of fine plates of bainitic ferrite (20-40 nm thickness) and thin films of carbon enriched austenite. These microstructures are very hard (600 HV) and strong (2.5 GPa).