Abstract

This paper introduced a method of rapid solid-phase bonding Al block with Ag as the intermediate layer by longitudinal ultrasonic vibration under eutectic temperature in the atmospheric environment. This method is suitable for the application of structural lightweight design. It was observed that Al and Ag diffuse with each other in the weld seam to form an intermetallic compound Ag₂Al with close hexagonal structure. The effects of different reaction temperatures and ultrasonic vibration times on the microstructure and mechanical properties of intermetallic compound Ag₂Al were discussed. The influence of the effect of ultrasonic softening waves on surface oxide film rupture and element diffusion was explored. With the increase of ultrasonic vibration time, the intermetallic compounds grew along with the interface and the thickness increased. When the welding temperature was 500 °C and the ultrasonic vibration was 20 s, the highest average strength of the welded joint reaches 46.68 MPa.

Graphic Abstract

中文翻译：

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以Ag为中间层的2024铝合金纵向超声振动辅助快速固相键合设计

摘要

介绍了一种在大气环境下通过共晶温度下的纵向超声振动快速固相结合以Ag为中间层的Al嵌段的方法。此方法适用于结构轻量化设计的应用。观察到Al和Ag在焊缝中彼此扩散以形成具有紧密六边形结构的金属间化合物Ag ₂ Al。反应温度和超声振动时间对金属间化合物Ag _2的组织和力学性能的影响讨论了铝。探讨了超声波软化作用对表面氧化膜破裂和元素扩散的影响。随着超声振动时间的增加，金属间化合物随着界面的增长而增加，厚度增加。当焊接温度为500°C且超声振动为20 s时，焊接接头的最高平均强度达到46.68 MPa。

图形摘要