镍和铌元素对Cr5冷轧辊工作层组织和性能的影响  

INFLUENCE OF Ni AND Nb ON MICROSTRUCTURE AND PROPERTY OF WORKING LAYER ON Cr5 STEEL COLD ROLL BLANK

作　　者：武迎麦[1] 徐京[1] 张洪奎[2] 杨弋涛[1] 邵光杰[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072 [2]宝钢股份特殊钢分公司

出　　处：《上海金属》2011年第3期27-30,36,共5页Shanghai Metals

基　　金：国家科技部支撑计划课题(2007BAE51B04);宝钢-上海大学战略联盟项目

摘　　要：研究了0%~0.4%Ni和0%~0.05%Nb对Cr5冷轧辊钢组织和性能的影响。结果表明,钢中添加Ni元素可以细化组织,随着Ni含量的增加,冷轧辊钢的淬透性、硬度和耐磨性都得到一定程度的提高,含有0.2%Ni的轧辊硬度和耐磨性提高得比较显著;钢中的Nb元素以碳化物的形式存在,能阻止晶粒长大,提高了冷轧辊钢的硬度和耐磨性。Influence of Ni and Nb elements on the microstructure and property of working layer on Cr5 steel cold roll blank were studied.Results showed that finer grain size was observed in the steel with Ni addition,the hardenability,hardness and wear resistance were improved with the increase of the Ni content,and the improvement of hardness and wear resistance was significant with 0.2%Ni in the cold roll steel.The Nb element could suppress the growth of recrystallization grains due to the precipitation of NbC particles,which improved the hardness and wear resistance of cold roll steel.

关 键 词：Cr5冷轧辊钢 N iNb 显微组织 耐磨性 

分 类 号：TG161.8[金属学及工艺—热处理]