Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai, China.
Ultrason Sonochem. 2010 Feb;17(2):292-7. doi: 10.1016/j.ultsonch.2009.10.007. Epub 2009 Oct 17.
In this study, the authors applied furnace soldering with ultrasonic coating method to solder 6061 aluminum alloy and investigated the effects of both coating time and soldering temperature on its properties. The following results were obtained: firstly, the solder region mainly composed of four kinds of microstructure zones: rich Sn zone, rich-Pb zone, Sn-Pb eutectic phase and rich Al zone. Meanwhile, the microanalysis identified a continuous reaction product at the alumina-solder interface as a rich-Pb zone. Therefore, the joint strength changed with soldering time and soldering temperature. Secondly, the tensile data had significantly greater variability, with values ranging from 13.99MPa to 24.74MPa. The highest value was obtained for the samples coated with Sn-Pb-Zn alloy for 45s. Fractures occurred along the solder-alumina interface for the 6061 aluminum alloy with its surface including hybrid tough fracture of dimple and tear ridge. The interface could initially strip at the rich Bi zone with the effect of shear stress.
在这项研究中，作者采用炉中钎焊和超声涂覆的方法对 6061 铝合金进行了钎焊，并研究了涂层时间和钎焊温度对其性能的影响。得到以下结果：首先，钎焊接头区域主要由四种微观结构区域组成：富 Sn 区、富 Pb 区、Sn-Pb 共晶相和富 Al 区。同时，微分析确定氧化铝-钎料界面的连续反应产物为富 Pb 区。因此，接头强度随钎焊时间和钎焊温度而变化。其次，拉伸数据的变异性显著增加，范围为 13.99MPa 至 24.74MPa。涂层时间为 45s 的 Sn-Pb-Zn 合金的样品获得了最高值。6061 铝合金表面包括韧窝和撕裂脊混合的韧性断裂，断裂沿钎料-氧化铝界面发生。在剪切应力的作用下，界面首先在富 Bi 区剥落。
