摘要
采用水冷铜坩埚感应熔炼技术及陶瓷型壳铸造了人体假肢关节Ti-Nb-Zr-Mo合金精密铸件。利用光学显微镜XRD、SEM、TEM观察和分析了铸件的凝固组织。并且在25℃、0℃、-25℃、-50℃温度下测试了拉伸性能和弹性模量。结果表明,合金的凝固组织是由β+α'相组成,合金具有较高的强度,随着温度的降低合金的强度升高,伸长率降低,弹性模量保持在70 GPa左右。
Ti-Nb-Zr-Mo alloy precision casting of artificial limb joint was prepared by water jacketed copper crucible induction melting furnace and ceramic shell. The solidification structure of casting was observed by XRD, SEM and TEM, and the tensile property and Young＇s modulus were investigated at 25 ℃, 0 ℃, -25 ℃ and -50 ℃. The results show that the solidification structures are composed of β phase and α′ phase. The tensile strength increases, and the elongation decreases with decreasing temperature. The Young＇ s modulus is 70 GPa.
出处
《铸造》
CAS
CSCD
北大核心
2012年第10期1120-1124,共5页
Foundry
关键词
钛合金
假肢
凝固组织
力学性能
titanium alloy
artificial limb
solidification structure
mechanical property
