钢/铝管磁脉冲辅助半固态钎焊界面行为 |
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引用本文: | 杨正,胡建华,王跃申,杨凌志. 钢/铝管磁脉冲辅助半固态钎焊界面行为[J]. 焊接学报, 2021, 42(11): 51-56. DOI: 10.12073/j.hjxb.20201217002 |
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作者姓名: | 杨正 胡建华 王跃申 杨凌志 |
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作者单位: | 武汉理工大学, 武汉, 430070 |
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基金项目: | 国家自然科学基金资助项目(51475345) |
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摘 要: | 结合电磁成形技术和半固态钎焊技术,提出了一种钢/铝管磁脉冲辅助半固态钎焊工艺,利用电磁脉冲产生的洛伦兹力使铝外管高速碰撞半固态钎料,通过半固态钎料中固相颗粒对母材表面径向压缩和轴向剪切作用去除母材表面氧化膜,实现钢铝异种管材的无钎剂钎焊.在不同工艺参数下进行了钢/铝管磁脉冲半固态钎焊试验,研究了钎焊接头界面元素的扩散行...
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关 键 词: | 电磁成形 钢/铝管 半固态钎焊 界面行为 |
收稿时间: | 2020-12-17 |
Interface behavior of steel/Al tube assisted semi-solid brazing by magnetic pulse |
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Affiliation: | Wuhan University of Technology, Wuhan, 430070, China |
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Abstract: | A semi-solid brazing process assisted by magnetic pulse for steel/aluminum tube was proposed by combining electromagnetic forming technology and semi-solid brazing technology. The brazing of steel and aluminum dissimilar pipes without flux soldering was realized by means of the radial compression and axial shear action of solid particles in the semi-solid solder to remove the oxide film on the surface of the base metal. The diffusion behavior of interface elements and the growth mechanism of intermetallic compounds in brazing joints were studied by magnetic pulse semi-solid brazing experiments of steel/aluminum tubes under different process parameters. The results show that the weld microstructure is mainly composed of α-Al and zinc-rich phase. The Al2O3 oxide film at the aluminum side interface is broken and removed well, and a thin layer of FeAl3 intermetallic compound is formed at the steel side interface. Good metallurgical bonding is achieved at all parts. |
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