摘要
采用低熔点Al-Ag-Cu钎料,在火焰钎焊条件下,对2024铝合金进行钎焊连接,并对钎焊接头组织和性能进行了分析。结果表明,采用Al-Ag-Cu钎料成功实现了2024铝合金的钎焊,并获得了良好的钎焊接头。接头组织主要由黑色的Al2Cu相,灰色的α-Al相和亮白色的Ag2Al相组成。此外,钎焊接头界面处形成明显的反应层。钎焊接头强度测试结果表明,2024铝合金钎焊接头具有较高的抗剪切强度,达189.7 MPa。同时,钎焊接头也具有较高的显微硬度。
The low melting point Al-Ag-Cu filler metal was used for brazing 2024 aluminum alloy by torch brazing. The microstructure and properties of the brazed joint were analyzed. The results show that the brazing of 2024 aluminum alloy can be successfully achieved by using Al-Ag-Cu filler metal, and a good brazed joint can be obtained. The microstructure of brazed joint is mainly composed of black Al2Cu, α-Al and bright white Ag2Al phases. In addition, an obvious reaction layer is formed at the interface of the brazed joint. The strength test of the brazed joint shows that the 2024 aluminum alloy brazed joint has high shear strength up to 189.7 MPa. At the same time, the brazed joint also has high microhardness.
出处
《铸造技术》
北大核心
2017年第5期1171-1174,共4页
Foundry Technology
基金
四川省教育厅自然科学基金资助项目(15ZB0495)
四川高等职业教育研究中心资助项目(GZY14B22)
宜宾职业技术学院科研项目(ybzysc15-59)
