Friction stir vibration brazing (FSVB) by application of mechanical vibration was introduced in this investigation. In the current research, the adjoining samples are vibrated normally to the brazing line while FSB is performed. Low carbon steel sheets are joined together using FSB and FSVB while SiC nanoparticles are also incorporated in the joint. The microstructure and mechanical behavior of the joints developed under different conditions are analyzed. %67wt Sn-%33wt Pb alloy is used as braze metal. The results show that the strength of the friction stir vibration brazed specimens is higher than that of the friction stir brazed specimens. The vibration of adjoining specimens, during FSVB, enhances the eutectic reaction of the melt braze metal between the adjoining specimens and the melt fills the space between adjoining specimens thoroughly. By introducing vibration during the FSB process, both strain rate and temperature which have fundamental effects on the characteristics of the joints, increase. The results indicate that the strength and the hardness of FSVB-ed samples increase and the grain size decreases as vibration frequency increases from 30 to 60 Hz. In addition, the thickness of IMCs in the joint interface decreased to around 0.7 µm as the vibration frequency increased.

本研究介绍了应用机械振动的搅拌摩擦振动钎焊（FSVB）。在目前的研究中，在执行 FSB 的同时，相邻的样品通常会振动到钎焊线。低碳钢板使用 FSB 和 FSVB 连接在一起，而 SiC 纳米颗粒也被结合在接头中。分析了不同条件下接头的显微组织和力学行为。%67wt Sn-%33wt Pb 合金用作钎焊金属。结果表明，搅拌摩擦振动钎焊试样的强度高于搅拌摩擦钎焊试样。在 FSVB 期间，相邻试样的振动增强了相邻试样之间熔体钎焊金属的共晶反应，并且熔体完全填充了相邻试样之间的空间。通过在 FSB 过程中引入振动，对接头特性具有根本影响的应变速率和温度都会增加。结果表明，随着振动频率从 30Hz 增加到 60Hz，FSVB-ed 样品的强度和硬度增加，晶粒尺寸减小。此外，随着振动频率的增加，接头界面中 IMC 的厚度减小到 0.7 µm 左右。