采用BNi2钎焊304不锈钢∕纯铜工艺及机理研究  

Study on the brazing process and mechanism of 304 stainless steel/red copper by BNi2

作　　者：葛浩 李绍伟[1] 卢博 陈飞强 王付鑫[1] 吴恺威 GE Hao;LI Shaowei;LU Bo;CHEN Feiqiang;WANG Fuxin;WU Kaiwei(School of Materials Science and Engineering,Shanghai University of Engineering and Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学材料科学与工程学院,上海201620

出　　处：《焊接技术》2025年第2期46-49,I00002,共4页Welding Technology

基　　金：大学生创新训练项目(CS2305005)。

摘　　要：试验采用BNi2镍基钎料真空钎焊304不锈钢和T2纯铜。首先以同种金属材料作为母材进行钎焊,通过光学显微镜、扫描电镜共同观察金相显微组织,得到最优钎焊参数,再以304不锈钢与T2纯铜异种金属材料作为母材,进行钎焊并作组织分析。通过改变间隙,研究了不同间隙大小对异种母材接头钎焊缝隙处显微组织、元素的分布情况及显微硬度的影响。结果表明,当间隙达到50μm时,钎缝金属间化合物最少,成形质量最佳。Vacuum brazing of 304 stainless steel and T2 copper using BNi2 Nickel-based filler metal.Firstly,the same metal material was used as the base metal for brazing.The metallographic microstructure was observed through optical microscopy and scanning electron microscopy to obtain the optimal brazing parameters.Then,304 stainless steel and T2 copper dissimilar metal materials were used as the base metal for brazing.The results indicated that the main components of the brazing seam were Ni-Fe-based solid solution and intermetallic compounds.The intermetallic compounds increased with the increase of the clearance.When the clearance reached 50μm,the content of intermetallic compounds in the brazing seam was the least,achieving the best effect.

关 键 词：真空钎焊 显微组织 异种金属 金属间化合物 

分 类 号：TG454[金属学及工艺—焊接]