Carburized low silicon steel article and process

Details Carburized low silicon steel article and process Carburized low silicon steel article and process

C - Chemistry, Metallurgy

23

C

148/43

C23C 8/22 (2006.01) C21D 1/78 (2006.01)

Patent

CA 1300472

Abstract of the Disclosure Carburized Low Silicon Steel Article and Process A process for forming a carburized steel article includes carburizing a steel material containing not more than 0.10% silicon and less than 1.1% chromium to form an austenitic surface matrix having a high density of carbides dispersed therein. After quenching, the carburized steel article is characterized by an outer surface having a high ratio of carbides and is substantially free of intergranular oxides. As a result of preventing undesirable surface oxide formations and simultaneously providing a beneficial surface carbide structure, the bending fatigue strength, wear properties, and contact fatigue strength of articles such as gears, shafts, bearings and couplings are greatly enhanced.

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