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用电子探针和不同温度下的拉伸试验以及电阻法测量系统地研究了热变形对Ｎｉ４７．３Ｔｉ４３．８Ｎｂ８．９合金显微组织和力学性能的影响。结果表明，随着热变形量的增大，β－Ｎｂ相粒子在合金中的分布趋于均匀、弥散；热加工变形可显著提高合金的塑性，但对屈服强度影响较小；合金的应变恢复率和相变滞后均随热变形量的增大而增大。确定了较为合适的热变形工艺：在８５０℃下变形７０％。
The effects of thermal deformation on the microstructure and mechanical properties of Ni47.3Ti43.8Nb8.9 alloy were systematically investigated by means of electron probe, tensile test at different temperatures and resistance measurement. The results show that with the increase of thermal deformation, the distribution of β-Nb phase particles in the alloy tends to be uniform and dispersed. The hot deformation can significantly improve the ductility of the alloy, but has little effect on the yield strength. The strain recovery The rate and phase change lag both increase with the increase of thermal deformation. Determine the more appropriate thermal deformation process: deformation at 850 ℃ 70%.