Pure titanium due to its high corrosion resistance, low stiffness and good mechanical properties is commonly used in medicine for orthopaedic applications. However, its material properties (especially in the case of \({\upalpha }\)-titanium) require a further enhancement to fulfil its role. The thermoplastic deformation in mid-temperature is proposed as a method for microstructure improvement. Titanium samples were compressed in different temperatures and strain rates to determine the best conditions for grain fragmentation—the main factor responsible for strength and hardness increase. The thermoplastic stress–strain curves were registered. Then microstructure observations and electron backscatter analysis were performed on the chosen samples. Finally, mechanical response of the previously deformed material was obtained in room temperature compression tests. A significant grain fragmentation was recorded for the material deformed in 400 \(^{\circ }\hbox {C}\), at 0.1/s and 1/s strain rates. Desirable results were also noticed for the deformation performed at 500–600 \(^{\circ }\hbox {C}\). However, high temperatures (700–800 \(^{\circ }\hbox {C}\)) and strain rates (10/s) resulted in dynamic recrystallization, causing undesirable grain growth. An increase in hardness was observed in all cases, with higher values recorded in lower deformation temperatures. Room temperature compression tests revealed slight increase of ductility.

纯钛由于其高耐腐蚀性、低刚度和良好的机械性能而常用于医疗骨科应用。然而，其材料特性（尤其是\({\upalpha }\) -钛）需要进一步增强才能发挥其作用。提出中温热塑性变形作为改善微观结构的方法。在不同的温度和应变率下压缩钛样品，以确定晶粒破碎的最佳条件——晶粒破碎是强度和硬度增加的主要因素。记录热塑性应力-应变曲线。然后对所选样品进行微观结构观察和电子背散射分析。最后，在室温压缩试验中获得了先前变形材料的机械响应。在 400 \(^{\circ }\hbox {C}\) 、0.1/s 和 1/s 应变速率下变形的材料记录了显着的晶粒破碎。在 500–600 \(^{\circ }\hbox {C}\)下进行的变形也取得了理想的结果。然而，高温 (700–800 \(^{\circ }\hbox {C}\) ) 和应变速率 (10/s) 会导致动态再结晶，导致不良的晶粒生长。在所有情况下都观察到硬度增加，在较低的变形温度下记录到较高的值。室温压缩测试显示延展性略有增加。