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Microstructures and mechanical properties of brazed 6063 aluminum alloy joint with Al-Cu-Si-Ni filler metal
Welding in the World ( IF 2.4 ) Pub Date : 2020-07-30 , DOI: 10.1007/s40194-020-00972-6
Chong Pei , Xin Wu , Guoqing Zhang , Yaoyong Cheng , Xinyu Ren , Wei Wang , Huaping Xiong

In this study, brazing experiments were carried out on 6063 aluminum alloy using Al-20Cu-5Si-2Ni filler alloy. Microstructure, mechanical property, and removing behavior of oxide film of the brazed joints were analyzed. The results revealed that the 3% (CsF-AlF3) + 97% (KF-AlF3) non-corrosive flux showed high activity, especially effective removal of oxide films during the brazing process. For the brazing condition of 580 °C/10 min, the brazing seam contained less CuAl2 intermetallic compared with that of 570 °C/20 min and presented a higher shear strength of 126.1 MPa at room temperature. After heat treatment the joint strength was increased to 156.5 MPa. Furthermore, the heat-treated joints subjected to a salt spray test still retained a shear strength of 150.2 MPa.



中文翻译:

Al-Cu-Si-Ni钎料钎焊6063铝合金接头的组织和力学性能

在这项研究中,使用Al-20Cu-5Si-2Ni填充合金对6063铝合金进行了钎焊实验。分析了钎焊接头的组织,力学性能和氧化膜去除行为。结果表明,3%(CsF-AlF 3)+ 97%(KF-AlF 3)的非腐蚀性助焊剂显示出高活性,特别是在钎焊过程中有效地去除了氧化膜。对于580°C / 10 min的钎焊条件,钎焊层中所含的CuAl 2较少与570°C / 20分钟的金属间化合物相比,在室温下呈现出更高的剪切强度,为126.1 MPa。热处理后,接头强度增加到156.5 MPa。此外,经过盐雾测试的热处理接头仍保持150.2 MPa的剪切强度。

更新日期:2020-07-30
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