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IMPACT WELDING OF ALUMINUM ONTO COPPER BY THE GAS-GUN METHOD

机译:气枪法将铝冲击焊接到铜上

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An aluminum projectile was impact-welded onto a copper target at an impact velocity of 200 m/s or over using the gas-gun method. The microstructures and element distribution in the Al/Cu joint were analyzed by scanning electron microscope, electron probe mieroanalyser and dispersive X-ray spectroscopy.rnThe following results were obtained. The Al projectile was impact-welded onto a Cu target at an impact velocity from 200 to 370 m/s. The bonding strength of Al/Cu joint showed a maximum of 140 MPa at 220 m/s. The Al projectile was separated from the copper target at an impac, velocity of 370 m/s or over. The formation of the 6(CuAl_2) phase loads to the sound welding of Al onto Cu during impact welding. The cracks in the brittle θ phase causes a decrease in the bonding strength of Al/Cu joints.
机译:使用气枪法以200 m / s或更高的冲击速度将铝弹丸冲击焊接到铜靶上。通过扫描电子显微镜,电子探针显微分析仪和色散X射线光谱分析了Al / Cu接头中的显微组织和元素分布。获得以下结果。将Al弹丸以200至370m / s的冲击速度冲击焊接到Cu靶上。 Al / Cu接头的结合强度在220 m / s下显示最大140 MPa。以370 m / s或更高的速度将铝弹与铜靶分离。在冲击焊接过程中,将6(CuAl_2)相的形成加重了Al在Cu上的声音焊接。脆性θ相中的裂纹导致Al / Cu接头的结合强度降低。

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