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首页> 外文会议>International Conference on Manufacturing Technology, Materials and Chemical Engineering >Study On Microstructures And Properties Of 7A52 Aluminum Alloy Joints In Laser-MIG Hybrid Welding
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Study On Microstructures And Properties Of 7A52 Aluminum Alloy Joints In Laser-MIG Hybrid Welding

机译：激光 - MIG杂交焊接中7A52铝合金接头的微观结构与性能研究

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摘要

The 7A52 aluminum alloy of 10mm thickness was welded by laser-MIG hybrid welding. The microstructures and properties of the welded joints were studied. The results show that: The morphology of the weld section is "glass shape", and the "cup body area" of the top of the weld is formed by the arc thermal melting base material, with typical MIG welding characteristics. And the "cup foot area" of the bottom weld is produced by the keyhole effect and has the characteristics of laser deep fusion welding. The Zn and Mg elements have different degrees of evaporation and loss in the MIG welding zone and laser welding zone. The hardness from the center of the weld to both sides base metal is a u-shaped distribution. The average tensile strength of welded joints reached 304.7MPa, which is 74.3% of the base material.
机译：通过激光 - MIG混合焊接焊接7A52铝合金10mm厚度。研究了焊接接头的微观结构和性质。结果表明：焊接部分的形态是“玻璃形状”，焊缝顶部的“杯体积”由电弧热熔基材形成，具有典型的MIG焊接特性。底部焊缝的“杯脚面积”由锁孔效应产生，具有激光深熔接焊接的特点。 Zn和Mg元件在MIG焊接区和激光焊接区中具有不同程度的蒸发和损失。从焊缝中心到两侧基金金属的硬度是U形分布。焊接接头的平均拉伸强度达到304.7MPa，为74.3％的基础材料。

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