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 fatigueresistant bainitic steel product whose microstructure isessentially carbide-free. The method comprises the steps ofhot rolling a steel whose composition by weight includes from0.05 to 0.50 % carbon, from 1.00 to 3.00 % silicon and/oraluminium, from 0.50 to 2.50 % manganese, and from 0.25 to2.50 % chromium, balance iron and incidental impurities, andcontinuously cooling the steel from its rolling temperaturenaturally in air or by accelerated cooling.