Abstract The cyclical tensile deformation behavior of a solution-treated (ST) Ti–33Nb–4Sn alloy with a dual β and α" phases was investigated in this study. Experimental results indicated that the ST Ti–33Nb–4Sn alloy exhibited different deformation behavior during two different loading-unloading cycles, and that the deformation behavior was closely related to the characteristics of stress-induced martensitic (SIM) transformation, mainly including the extent and the reversibility of SIM transformation. During the first cycle, the extensive and incompletely reversible SIM transformation occurred, resulting in notable “double yielding” during loading and residual permanent strain after unloading. In the second cycle, however, a slight and reverse SIM transformation, together with pure elastic deformation, taken place concurrently, giving rise to a recoverable nonlinear deformation behavior. Our results also imply that by tailing the characteristics of SIM transformation, the Ti-based alloys with a mixture of α" and β phases might perform recoverable deformation and possess a promising potential for engineering applications.

中文翻译：

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具有双β和α"相的固溶处理Ti-33Nb-4Sn合金在循环加载-卸载下的拉伸变形行为

产生可恢复的非线性变形行为。我们的结果还表明，通过拖尾 SIM 转变的特征，具有 α" 和 β 相混合物的 Ti 基合金可能会进行可恢复的变形，并具有潜在的工程应用潜力。