In order to further reveal the effect of Ti-18Zr-12.5Nb-2Sn alloys with different cold rolling on the microstructure, transformation behavior, and superelastic properties, in-situ X-ray diffraction, in-situ laser scanning confocal microscopy, electron backscatter diffraction, and tensile tests have been carried out. We found that the ultimate tensile strength decreased from 696 MPa to 594 MPa, and the fracture strain increased from 23% to 38%, as the percentage of cold rolling increased from 75% to 99%. Moreover, the superelastic recovery strain was optimized to 5.15% with the increase in the percentage of cold rolling, which is attributed to the evolution of the stronger {001}_β 〈011〉_β-type texture under large cold deformation of solution treatment. The strain glass behavior of the samples was regulated by varying the percentage of cold rolling; the ideal freezing temperature gradually decreased from 248.5 K to 174.2 K with increase in percentage of cold rolling. Finally, the stress-induced entropy change ∼10.5 J/(kg K) for a temperature range of ∼105 K was obtained after the training sample thirty times.

为了进一步揭示不同冷轧Ti-18Zr-12.5Nb-2Sn合金对显微组织、相变行为和超弹性性能的影响，原位X射线衍射、原位激光扫描共聚焦显微镜、电子背散射进行了衍射和拉伸试验。我们发现，随着冷轧百分比从 75% 增加到 99%，极限抗拉强度从 696 MPa 降低到 594 MPa，断裂应变从 23% 增加到 38%。此外，随着冷轧百分比的增加，超弹性回复应变优化为 5.15%，这归因于更强的 {001} _β  <011> _{β的演变。}固溶处理大冷变形下的型织构。通过改变冷轧的百分比来调节样品的应变玻璃行为；随着冷轧率的增加，理想冷冻温度从248.5 K逐渐下降到174.2 K。最后，在训练样本 30 次后，在 ∼105 K 的温度范围内，应力引起的熵变化为 ∼10.5 J/(kg K)。