The microstructure, mechanical and magnetic properties of Zr–x (8, 9, 10, wt.%)Nb–4Sn alloys were investigated to obtain novel Zr-based alloy with low Young’s modulus and magnetic susceptibility for biomedical implants. After homogenization annealing, hot forging and solution annealing, Zr–8Nb–4Sn, Zr–9Nb–4Sn and Zr–10Nb–4Sn alloys were composed of β+α″ phase, β+α″ phase, β+ω phase, respectively. The temperature at which the α" and ω phase were transformed into β phase during the heating process was about 200 ​°C, and the phase transformation temperature decreased with the increase of Nb element. Among all the Zr–x (x ​= ​8,9,10)Nb–4Sn(wt.%) alloys, Zr–9Nb–4Sn alloy had the lowest Young's modulus of 46.6 ​GPa and the low magnetic susceptibility of 1.294 ​× ​10⁻⁶ cm³g⁻¹, which has a good application prospect for biomedical applications.

研究了 Zr-x (8, 9, 10, wt.%) Nb-4Sn 合金的微观结构、机械和磁性能，以获得用于生物医学植入物的具有低杨氏模量和磁化率的新型 Zr 基合金。Zr-8Nb-4Sn、Zr-9Nb-4Sn和Zr-10Nb-4Sn合金经过均质化退火、热锻和固溶退火后分别由β+α"相、β+α"相、β+ω相组成。加热过程中α"和ω相转变为β相的温度约为200℃，相变温度随着Nb元素的增加而降低。其中Zr-x(x= 8,9,10)Nb-4Sn(wt.%)合金，Zr-9Nb-4Sn合金的杨氏模量最低为46.6GPa，磁化率为1.294×10 ^-6 cm ³ g ^-1，在生物医学应用方面具有良好的应用前景。