2009•The Heat TreatmentRequires access
Effect of Deep Cryogenic Treatment on Microstructure and Mechanical Properties of Cr12 Steel
Zhao Guo-hua
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Abstract
The microstructure and mechanical properties of Cr12 steel deep cryo-treated by different processes were investigated.The results reveal that the deep cryogenic treatment can increase the hardness of steel to a certain extent and obviously increase its wear resistance,with the wear loss being reduced by 45% after deep cryogenic treating for 6 h.However,the impact toughness of steel quenched and subsequently deep cryo-treated and tempered at 180 ℃ for 8h has failed to be improved on.