Effect of Cryogenic Treatment on Property of 14Cr2Mn2V High Chromium Cast Iron Subjected to Subcritical Treatment
Effect of Cryogenic Treatment on Property of 14Cr2Mn2V High Chromium Cast Iron Subjected to Subcritical Treatment
LIU Hao��huai1,2,WANG Jun1,YANG Hong��shan1,SHEN Bao��luo1, GAO She��ji1,HUANG Si��jiu3
1. Metal Material Department, Sichuan University, Chengdu 610064, Sichuan, China;2. Department of Mechanical Measurement, National Institute of Measurement and Testing Technology, Chengdu 610021, Sichuan, China;3. Sijiu Rare Earth Alloy Foundry, Chengdu 610211, Sichuan, China
Abstract��Effect of cryogenic treatment on the microstructure, hardening behavior and abrasion resistance of 14Cr2Mn2V high chromium cast iron (HCCI) subjected to subcritical treatment was investigated. The results show that cryogenic treatment after subcritical treatment can obviously improve the hardness and abrasion resistance of HCCI because abundant retained austenite is transformed into martensite and fine secondary carbides [(Fe, Cr)23C6] precipitate. The amount of martensite and precipitated secondary carbide in HCCI experiencing subcritical treatment followed by cryogenic treatment was more than that experiencing the subcritical treatment followed by air cooling. When the abrasion resistance of HCCI reaches the maximum, its microstructure contains about 15% retained austenite. Cryogenic treatment can further reduce the austenite content but the retained austenite cannot be transformed into martensite completely.
. Effect of Cryogenic Treatment on Property of 14Cr2Mn2V High Chromium Cast Iron Subjected to Subcritical Treatment[J]. �й������ڿ���, 2006, 13(6): 43-0.
LIU Hao��huai;WANG Jun;YANG Hong��shan;SHEN Bao��luo;GAO She��ji;HUANG Si��jiu. Effect of Cryogenic Treatment on Property of 14Cr2Mn2V High Chromium Cast Iron Subjected to Subcritical Treatment. Chinese Journal of Iron and Steel, 2006, 13(6): 43-0.
2006, Vol. 13 
