腐蚀损伤铝合金表面超声焊接截面组织结构分析
Microstructure Analysis of Ultrasonic Welding of Aluminum Alloy Sheet on Corroded 2A12CZ Aluminum Alloy
黄元林，朱有利，谢俊峰，边飞龙，李占明
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作者单位：装甲兵工程学院
中文关键字：2A12CZ铝合金 超声焊接 焊接界面 组织结构
英文关键字： 2A12CZ aluminum alloy; ultrasonic welding; weld interface; microstructure
中文摘要：在腐蚀受损的2A12CZ基体上采用超声焊接铝合金箔材的工艺进行了修复处理，并利用光学显微镜观察和分析了焊接时间对箔材与基体之间焊接界面组织的影响。结果表明：当焊接时间为0.6 S时，箔材与基体之间呈断续的结合状态，能分辨出结合界面，且界面呈锯齿状或涡流状分布，当焊接时间为1.2 S时，箔材与基体之间完全结合成一体，界面消失，呈冶金结合状态；最后对铝合金箔材与铝合金基体之间超声焊接机理进行了探讨。
英文摘要：A 0.3mm-thick 2A12CZ aluminum alloy sheet was first welded on the corroded 2A12CZ aluminum alloy substrates by ultrasonic welding method, which repaired the corroded 2A12CZ aluminum alloy. Then the effect of welding time on the microstructure of interface between the film and the substrate was investigated by optical microscope. The results showed that: when the welding time was 0.6 S, the interface can be found and presented a un-continuing sawtooth or turbulence adhesive state; when the welding time was 1.2 S, the interface can’t be found and presented a whole metallurgical adhesive state. At last, the adhesive mechanism between the sheet and the substrate was discussed.