ZG30SiMn钢与NM360钢异种钢焊接接头组织与性能研究  

Microstructure and Properties of ZG30SiMn Steel and NM360 Steel After MAG

作　　者：张元杰[1,2] 马成勇[2] 彭云[2] 杜全斌[1] 陆建生[1] 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093 [2]钢铁研究总院焊接研究所,北京100081

出　　处：《热加工工艺》2013年第17期202-204,207,共4页Hot Working Technology

摘　　要：对国内某厂家生产的NM360钢和ZG30SiMn钢采用气体保护焊进行异种钢焊接,并对焊接接头进行力学性能试验及微观组织观察。结果表明:ZG30SiMn钢焊接接头CGHAZ和FGHAZ组织为铁素体+魏氏组织+马氏体,ICHAZ组织为珠光体+铁素体+贝氏体;NM360钢焊接接头CGHAZ和FGHAZ组织为低碳马氏体,ICHAZ组织为铁素体+M-A。ZG30SiMn的HAZ没有软化行为,而NM360调质钢的ICHAZ和SCHAZ有软化现象。ZG30SiMn钢HAZ发生脆化,NM360钢HAZ冲击性能较好。Abstraet.NM360 steel and ZG30SiMn steel was welded by using MAG and the mechanical and microstructure of the welded joints were studied. The results show that： ZG30SiMn steel welded joints CGHAZ and FGHAZ microstructure is F＋W＋B, ICHAZ microstructure is P＋F＋B; the welded joint of NM360 steel CGHAZ and FGHAZ is low carbon martensitic, ICHAZ microstructure is ferrite and M-A, the ferrite makes ICHAZ hardness significantly reduce. The HAZ of ZG30SiMn steel is embrittlement, but the impact toughness of NM360 steel HAZ is qualified. Key words ：ZG30SiMn steel; NM360 steel; microstructure; property

关 键 词：ZG30SiMn钢 NM360钢 组织 性能 

分 类 号：TG457.11[金属学及工艺—焊接]