BNi-2+BNi-5复合钎料钎焊不锈钢填缝能力及其组织性能研究  

Study on Clearance Filling Ability and Interfacial Structure of 316L Stainless Steel Brazed Joint Using BNi-2+BNi-5 Composite Filler

作　　者：于治水[1] 祁凯[2] 李瑞峰[2] 陈国强 

机构地区：[1]上海工程技术大学材料工程学院,上海201620 [2]江苏科技大学材料科学与工程学院,江苏镇江212003 [3]上海齐耀动力技术有限公司生产部,上海201203

出　　处：《热加工工艺》2009年第3期111-113,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(50875160);上海市教委重点学科资助项目(J51402);上海市科委攻关资助项目(071005120)

摘　　要：采用在BNi-2钎料中加入高熔点BNi-5钎料的方法对316L不锈钢进行真空钎焊研究,搭接接头头部为自然间隙,尾部加Mo丝确定间隙的方式,着重了解使用复合钎料时钎料的填缝能力。结果表明,复合钎料具有较好的填缝性能,并且钎焊接头在不同位置出现了不同性能的钎缝,在钎缝头部以镍基固溶体为主,随着距离的深入,金属间化合物的含量逐渐增加,显微硬度峰值也逐渐增加。The BNi-2＋BNi-5 composite filler was used to solder 316L stainless steel sheet with vacuum braze. The lap joint was in the form of natural interval, and then the Mo wire at the bottom of the clearance serves as a manner of deciding the interval. The clearance filling ability, the interracial structure and the element distribution were studied. The results show that composite filler has good clearance filling abilities. The interfacial structure is varied at different seam spots, at the beginning of the seam there are nickel based solid solutions, with the distance deeper, the intermetallic compounds increase and microhardness gets higher.

关 键 词：不锈钢 真空钎焊 复合钎料 BNI-2 BNi-5 

分 类 号：TG454[金属学及工艺—焊接]