The deformation behavior, microstructure, phase composition, and mechanical and functional properties of Ti-50.9 at.%Ni shape memory alloy during uniaxial compression in the temperature range from 25°C to 1000°C have been analyzed and are discussed herein. It was found that the deformation temperature of 300°C marked a boundary for the transition from the low- to high-temperature type of flow curves; achievement of the steady-state deformation stage was observed across a wide range of deformation temperatures. Following comprehensive analysis of the obtained data, the temperature ranges of the dynamic processes of recovery, polygonization, and recrystallization of the Ti-50.9 at.%Ni alloy were determined. Deformation in the range of dynamic polygonization is accompanied by not only the formation of B2-austenite and R-phase, but also the precipitation of fine Ti₃Ni₄ particles during deformational aging. The highest shape recovery characteristics were obtained after deformation of the Ti-50.9 at.%Ni alloy in the temperature range from 300°C to 600°C.

分析和讨论了Ti-50.9 at。％Ni形状记忆合金在25°C至1000°C温度范围内单轴压缩过程中的变形行为，微观结构，相组成以及力学和功能性能。发现300℃的变形温度标志着从低温到高温流动曲线过渡的边界。在很宽的变形温度范围内都观察到了稳态变形阶段的实现。在对获得的数据进行全面分析之后，确定了Ti-50.9 at。％Ni合金的恢复，多晶化和再结晶动力学过程的温度范围。在动态多边形化范围内的变形不仅伴随着B2-奥氏体和R相的形成，变形时效过程中的₃ Ni ₄颗粒。Ti-50.9 at。％Ni合金在300°C至600°C的温度范围内变形后，可获得最高的形状恢复特性。