三层卷焊钢管钎焊接头的成分和微观组织  

COMPOSITION AND MICROSTRUCTURE OF BRAZING JOINT OF TRIPLE WALL BRAZED TUBE

作　　者：陈玉良[1] 刘建华[2] 李云江[2] 吴坚[2] 赖明道[2] 

机构地区：[1]燕山大学轧机研究所,工程师秦皇岛066004 [2]燕山大学

出　　处：《钢铁》1997年第11期55-57,27,共4页Iron and Steel

摘　　要：借助扫描电子显微分析(SEM)、电子探针 X 射线显微分析(EPMA)等手段,观察分析了三层卷焊钢管钎焊接头的化学成分和微观组织。结果表明:①钎焊接头由上、下扩散区和中界区组成;②在扩散区的铁素体晶间,铜重量浓度可达10%左右,在中界区铁重量浓度约为6%;③在扩散区和中界区中均形成α和ε固溶体混合物;④钎焊接头性能优良。With the help of scanning electron microscope(SEM)and electron probe (EPMA),the chemical composition and microstructure of brazing joint of triple wall brazed tube have been investigated and analyzed.It is shown that ①the brazing joint consists of upper and lower diffusion area as well as the interracial area;②in the ferrite grain boundaries in diffusion area,Cu concentration in weight can be up to 10%,while Fe concentration in weight in the interracial area is about 6 %;③α and ε solid solution are formed in the diffusion and interracial area;④the brazing joint is of good properties.

关 键 词：卷焊管 化学成分 微观组织 钎焊 接头 

分 类 号：TG407[金属学及工艺—焊接]