Herein, the effect of deformation temperature on microstructure evolution and mechanical properties in an α-type Zr0.5Be (wt%) alloy has been discussed in detail. The results indicate that with the increase of deformation temperature, the deformation degree of α-laths is decreased. The duplex microstructure including coarse primary α_p and secondary α_s has been obtained in Zr0.5Be alloy deformed at 870 °C. The evolution of microstructures can be attributed to the change of deformation energy and atomic diffusion rate with the variation of temperature. The β phase appears as the deformation temperature is set to 670 °C and 770 °C. The transformation process of the β phase is caused by the combination of segregation degree and diffusion rate of Be atoms along with the deformation stored energy in the matrix. Also, as the deformation temperature is gradually increased, the tensile strength and microhardness are both decreased while the fracture elongation is increased. As the deformation temperature rises, the combined effects of the occurrence of dynamic recrystallization, elimination of deformation stored energy, and uniform distribution of Be elements can play a leading role in the increase of fracture elongation and decrease of strength.

在本文中，已经详细讨论了变形温度对α型Zr0.5Be（wt％）合金的组织演变和力学性能的影响。结果表明，随着变形温度的升高，α-板条的变形程度降低。双工微观结构包括粗初生α _p和次级α_小号已在870°C变形的Zr0.5Be合金中获得。微观结构的演化可以归因于变形能和原子扩散率随温度的变化而变化。当变形温度设定为670°C和770°C时，β相出现。β相的转变过程是由Be原子的偏析度和扩散率以及基体中的变形储能共同导致的。另外，随着变形温度的逐渐升高，抗拉强度和显微硬度均降低，而断裂伸长率则升高。随着变形温度的升高，动态再结晶，消除变形存储能量，