On the Causes of the Formation of a Maximum in the Dependences of the Coercive Force of Simple Carbon Steels on the Tempering Temperature

摘要

The dependences of the coercive force H_c of quenched specimens made of simple carbon steels on the tempering temperature T_t were measured at room and liquid-nitrogen temperatures.These studies showed that the formation of the character of H_c(T_t) dependences for the mentioned steels within the region of medium and high tempering temperatures is caused by the content of cementite and its magnetic hysteresis properties.