Abstract In this study, crossed Nitinol wires were joined by laser welding, and the microstructures of the joint in various zones were revealed by transmission electron microscopy. A series of nanoindentation experiments were performed across the joint, and the size changes of indentations after heating were used to evaluate the shape memory effects. Compared to BM, HAZ retained about the 95% shape recovery, higher than FZ, which retained about the 75% recovery rate.

中文翻译：

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激光焊接镍钛诺线的显微组织和形状记忆效应

摘要 本研究采用激光焊接连接交叉镍钛诺线，并通过透射电子显微镜观察接头各区域的微观结构。在整个接头处进行了一系列纳米压痕实验，并利用加热后压痕的尺寸变化来评估形状记忆效应。与 BM 相比，HAZ 保留了大约 95% 的形状恢复率，高于 FZ，保留了大约 75% 的恢复率。