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After tempering cryogenic treatment

Editor：    Date：2014-07-14 14:34:44    Views：4148

Tool and die steel quenching immediately after cryogenic treatment, the occurrence of AR → M transition and M precipitated a number of fine dispersed K, the hardness and toughness decrease. Such as quenching and tempering after cryogenic treatment, the AR in the process of tempering has completed the transformation, the basic do not increase the hardness, and M will disperse precipitation of fine K, reduced the M supersaturation and internal stress, also can improve the toughness and wear resistance steel.
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