The achievement of an effective connection between superelastic NiTi and 304 stainless steel (304 SS) using ultrasonic welding with varying welding energy inputs has been studied. It has been observed that the addition of aluminium foil serves to a tight joint, which displays two kinds of interfaces where no defects were observed. With the increase in input energy, the peak load exhibits an initial growth phase followed by a decrement phase, and the interfacial heat production intensifies gradually, leading to subsequent interfacial oxidation. When the input energy is 750 J, the joint peak load reaches its maximum at 890 N. The fracture pattern of the joint exhibited both interfacial fracture and edge fracture. In high welding energy situations, Fe₄Al₁₃ (a brittle phase) is produced, which deleteriously impact on the joint's performance. Conversely, low welding energy results in the absence of any brittle phase formation.

研究了使用不同焊接能量输入的超声波焊接实现超弹性 NiTi 和 304 不锈钢 (304 SS) 之间的有效连接。据观察，添加铝箔可实现紧密连接，显示出两种未观察到缺陷的界面。随着输入能量的增加，峰值负载呈现出最初的增长阶段，然后是下降阶段，界面产热逐渐增强，导致随后的界面氧化。当输入能量为750 J时，接头峰值载荷在890 N处达到最大值。接头的断裂模式表现为界面断裂和边缘断裂。在高焊接能量情况下，Fe ₄ Al ₁₃（脆性相）的产生，会对接头的性能产生有害影响。相反，低焊接能量导致不形成任何脆性相。