摘要
为研究钎料形状对铝钢高频感应钎焊工艺的影响,使用箔片状、粉末状及丝状Al-Si钎料焊接Q235钢/6061铝合金,利用蔡司显微镜和扫描电镜分析母材润湿性和钎缝组织,采用万能实验机测定接头剪切性能。结果表明:在实验条件下,粉末状AS-1钎料对母材润湿性最好,箔片状4047钎料和丝状Al-47-S环保自钎焊条对母材润湿性相近;三种钎料钎焊Q235钢/6061铝合金钎焊接头构成相同,均为6061铝合金、钎缝中心区、铁铝金属间化合物IMC层和Q235钢;剪切断裂位置均在IMC层,剪切强度随IMC层厚度增加先升高后降低;丝状Al-47-S环保自钎焊条剪切强度最高,箔片状4047钎料次之,粉末状AS-1钎料最低。
This paper is focused on a study investigating the effect of the shape of the solder on the high-frequency induction brazing process of aluminum steel.The targeted study involves welding Q235 steel/6061 aluminum alloy using foil-shaped,powder-shaped and wire-shaped Al-Si solders,and analyzing the base material by ZEISS microscope and scanning electron microscope;and measuring the joint shear properties using a universal testing.The results show that,under the experimental conditions,powder AS-1 solder has the best base metal wettability,and the foil-like 4047 solder and the filamentary Al-47-S environmental protection self-soldering electrode have similar wettability to the base metal.The brazed joints produced by the three types of brazing filler metals to weld Q235 steel/6061 aluminum alloy are of the same compositions:6061 aluminum alloy,center zone of brazing joint,iron and aluminum intermetallic compound IMC layer and Q235 steel.All the shear fractures are located in the IMC layer,and the shear strength sees an initial increase and a subsequent decrease with an increase in the thickness of the IMC.Wire-like Al-47-S environmental protection self-soldering rod exhibits the highest shear strength,followed by foil-like 4047 solder and powder-like AS-1 solder.
作者
赵霞
张世玉
张子博
郭大若
Zhao Xia;Zhang Shiyu;Zhang Zibo;Guo Daruo(School of Materials Science&Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China;China Nuclear Industry Fifth Construction Company Limited,Shanghai 201512,China)
出处
《黑龙江科技大学学报》
CAS
2020年第2期205-209,共5页
Journal of Heilongjiang University of Science And Technology
基金
黑龙江省自然科学基金项目(E2018054)。
关键词
高频感应钎焊
润湿性
显微组织
剪切强度
high-frequency induction brazing
wettability
micro-structure
shear property
