高耐候钢与不锈钢焊接接头的微观组织与性能研究  

Study on Microstructure and Properties of Welded Joint of High Strength Weathering Steel and Stainless Steel

作　　者：张强[1,2] 韩建民[1] 张泽[2] 潘传珍 王军强[1] 

机构地区：[1]北京交通大学机械电子与工程学院,北京100044 [2]南车四方车辆有限公司,山东青岛266000

出　　处：《热加工工艺》2014年第13期173-174,177,共3页Hot Working Technology

摘　　要：采用熔化极活性气体(98%Ar+2%CO2)保护焊(MAG)方法,研究了高耐候钢与奥氏体不锈钢焊接接头的组织与性能。结果表明,焊接接头的力学性能可以达到母材的强度水平;焊接接头母材区高耐候钢组织为铁素体+少量珠光体,不锈钢为全奥氏体组织,焊缝区为奥氏体+鱼骨状铁素体组织,不锈钢侧热影响区组织为奥氏体+条状的铁素体组织,高耐候钢侧热影响区组织为聚集成团的铁素体团簇+珠光体组织。The microstructure and mechanical properties of welded joint of high strength weathering steel and austenitic stainless steelwere studied by using metal active gas （98%Ar＋2%CO2） welding （MAG） process. The results show that,the mechanical properties of MAG welded joints can reach the strength of parent materials. The microstructure of high weather resistance steel is ferrite ＋ a small amount ofpearlite, whereas, stainless steel is austenite stainless steel for the whole, and the weld zone is anstenite ＋ fishbone ferrite. Furthermore, heat affected zone on the side of stainless steel is austenite ＋ lath ferrite, and yet it is gathered into the ferrite ＋ pearlite group for high weather resistant steel.

关 键 词：高耐候钢 奥氏体不锈钢 焊接接头 微观组织 接头性能 

分 类 号：TG406[金属学及工艺—焊接]