This research studies the structure and mechanical properties of Ni/Ti multilayered composites produced from commercial pure Ni and Ti foils by accumulative roll-bonding technique. To investigate these properties, scanning electron microscopy, Vickers microhardness, and uniaxial tensile tests were conducted at different processing cycles. Studies showed that in terms of structure, Ni and Ti layers maintain their continuity even up to 10 cycles of accumulative roll-bonding. Moreover, the energy-dispersive spectroscopy in scanning electron microscopy detected no deformation induced diffusion or reactive interfacial zones. It was found that by increasing the accumulative roll-bonding cycles, tensile and yield strengths as well as the hardness of the composite enhance and the total elongation reduces continuously.

中文翻译：

---

累积压焊工艺制备的Ni/Ti多层复合材料的结构和力学性能

本研究研究了由商用纯 Ni 和 Ti 箔通过累积压焊技术生产的 Ni/Ti 多层复合材料的结构和机械性能。为了研究这些特性，在不同的加工周期进行了扫描电子显微镜、维氏显微硬度和单轴拉伸试验。研究表明，在结构方面，Ni 和 Ti 层即使在长达 10 次的累积滚压循环中也能保持其连续性。此外，扫描电子显微镜中的能量色散光谱没有检测到变形引起的扩散或反应界面区域。结果表明，通过增加累积滚压循环次数，复合材料的拉伸强度和屈服强度以及硬度提高，总伸长率不断降低。