The microstructures of the carburized layer consist of fine martensite with a small amount of retained austenite in surface layer and lath martensite with acicular bainite in ransition l...

• 表层组织为细小分散马氏体+少量残留奥氏体,过渡层为针状贝氏体+板条马氏体,心部主要为束状贝氏体。渗层耐磨性好,基体力学性能优良,能很好地满足齿轮的服役条件。