Effect of Cryogenic Treatment on Property of 14Cr2Mn2V High Chromium Cast Iron Subjected to Subcritical Treatment

作     者：LIU Hao-huai WANG Jun YANG Hong-shan SHEN Bao-luo GAO She-ji HUANG Si-jiu 

作者机构：Metal Material Department Siehuan University Chengdu 610064 Sichuan China Department ofMechanical Measurement National Institute of Measurement and Testing Technology Chengdu 610021Siehuan China Sijiu Rare Earth Alloy Foundry Chengdu 610211 Siehuan China 

出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)

年 卷 期：2006年第13卷第6期

页      面：43-48页

核心收录：

学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程] 

主　　题：high chromium cast iron cryogenic treatment subcritical treatment martensite transformation abrasion resistance 

摘      要：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 E（Fe, Cr）23 C6 ] 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 in to martensite completely.