Improvements in and relating to carbide-free bainitic steels and methods of producing such steels

摘要

A method of producing a wear and rolling contact fatigue resistant bainitic steel product whose microstructure is essentially carbide-free. The method comprises the steps of hot rolling a steel whose composition by weight includes from 0.05 to 0.50% carbon, from 0.50 to 3.00% silicon and/or aluminium, from 0.50 to 2.50% manganese, and from 0.25 to 2.50% chromium, balance iron and incidental impurities, and either cooling the steel from its rolling temperature continuously and naturally in air or by continuously accelerated cooling.