Low-Temperature High-Frequency Induction Brazing of 5052 Aluminum Alloy to Stainless Steel with Sn-Zn Solder

被引：9
|
作者：
Yu, Gaoyang [1 ]
Chen, Shuhai [1 ]
Hai, Lu [1 ]
Huang, Jihua [1 ]
Yang, Jian [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
JOM | 2019年 / 71卷 / 05期
基金：
中国国家自然科学基金;
关键词：
MECHANICAL-PROPERTIES; MOLTEN ALUMINUM; SOLID STEEL; DIFFUSION; PARAMETERS; INTERFACE; LAYERS;
D O I：
10.1007/s11837-018-3280-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Low-temperature high-frequency induction brazing of 5052 aluminum alloy to stainless steel was carried out using Sn-30Zn with reactive-flux 88ZnCl(2)-10NH(4)Cl-2NaF wt.%. The influence of processing parameters on microstructures, mechanical property and fracture behavior was investigated. Intermetallic compounds were not observed at the interface of the steel. The brazing seam consisted of Sn-Zn eutectic structures, Zn-rich solid solution and oxide inclusion. The diffusion of Sn and Zn into the aluminum grain boundary led to an intergranular penetration layer. When brazing at 370 degrees C for 30s, the joint fractured in the brazing seam and the shear strength reached the highest at 87MPa. The fracture surface of the joint presented ductile characteristics. The diffusion of F- in the flux made the oxide film expand and crack. Zn2+ permeated through the crack of the film and then reacted with Al, which removed the film from aluminum substrate.
引用
收藏
页码：1785 / 1792
页数：8
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