Ti对Zr-Nb二元合金β结构稳定性和力学性能的影响

王明康, 苑峻豪, 刘宇峰, 王清, 董闯, 张中伟

Effect of Ti on β Structural Stability and Mechanical Properties of Zr-Nb Binary Alloys

WANG Mingkang, YUAN Junhao, LIU Yufeng, WANG Qing, DONG Chuang, ZHANG Zhongwei

表1 设计系列合金的相组成及力学性能

Table 1 Mechanical properties and phase constitution of the designed series of alloys

Alloy Phase constitution E σYS σUTS δ Microhardness Nbeq (mass GPa MPa MPa % HV fraction / %) Matrix Second phase N1 α(α') β 71±2 678±16 785±10 5.5±0.4 265±8 5.65 N2 β ω 96±2 - 692±12 - 415±7 8.47 N3 β ω 59±1 559±12 603±8 13.8±0.6 194±6 16.92 TN3 β - 57±1 557±9 584±11 15.5±0.5 195±3 20.12 T1N2 β α+ω 64±3 496±16 847±7 17.4±0.8 237±6 17.75 Zr-19.2Nb β ω 55±1 488±15 515±10 12.2±0.6 190±6 19.20