This work investigated the microstructures, texture evolution, and mechanical properties of newly designed metastable β type Ti–10Mo–6Zr–4Sn–3Nb (wt.%) alloys for biomedical devices, which were subjected to cold swaging deformation with reductions of 15–75%. With the increment in the reduction of swaging deformation, the grains are broken and gradually refined, and stress-induced martensite transformation takes place, resulting in the formation of the α” phase. Moreover, the {1 1 2} <1 1 1> and {1 1 0} <1 1 2> fibers turn into γ-fiber {1 1 1} <1 1 0> and α-fiber {1 1 2} <1 1 0> with the increment in the swaging reduction. The α-fiber texture in particular, first weakens and then strengthens during cold deformation. Under the combined effect of sub-structures, grain refinement, and texture evolution, the strength of the alloy is gradually enhanced with the increment in the cold deformation reduction. The solution-treated alloy bar shows superior cold workability in the swaging process. The plasticity remains at a moderate level because the initial grains have not been completely broken at the beginning of cold swaging deformation. The elastic modulus of the alloy shows a downward trend with an increasing reduction, which is related to the dislocation multiplication, grain refinement, and grain orientation evolution during cold swaging deformation.

这项工作研究了用于生物医学设备的新设计的亚稳β型Ti–10Mo–6Zr–4Sn–3Nb（wt。％）合金的微观结构，织构演变和力学性能，这些合金经受了15–75的冷锻变形％。随着型锻变形减少的增加，晶粒破碎并逐渐细化，并发生了应力诱导的马氏体相变，从而形成了α”相。此外，{1 1 2} <1 1 1>和{1 1 0} <1 1 2>纤维变成γ纤维{1 1 1} <1 1 0>和α纤维{1 1 2} < 1 1 0>，随着型锻减少量的增加。特别是在冷变形期间，α纤维质地会先减弱然后增强。在子结构，晶粒细化和纹理演变的综合作用下，随着冷变形减少的增加，合金的强度逐渐增强。固溶处理的合金棒在型锻过程中显示出优异的冷加工性能。可塑性保持在中等水平，因为初始晶粒在冷锻变形开始时并未完全破碎。合金的弹性模量呈下降趋势，并随着增加而减小，这与冷锻变形过程中的位错倍增，晶粒细化和晶粒取向演变有关。可塑性保持在中等水平，因为初始晶粒在冷锻变形开始时并未完全破碎。合金的弹性模量呈下降趋势，并随着增加而减小，这与冷锻变形过程中的位错倍增，晶粒细化和晶粒取向演变有关。可塑性保持在中等水平，因为初始晶粒在冷锻变形开始时并未完全破碎。合金的弹性模量呈下降趋势，并随着增加而减小，这与冷锻变形过程中的位错倍增，晶粒细化和晶粒取向演变有关。