Mo含量对生物医用Ti-Zr-Nb合金组织与性能的影响  

Effect of Mo Content on Microstructure and Properties of Ti-Zr-Nb Alloy for Biomedical Application

作　　者：王一心 炊鹏飞[1,2] 李文刚 冯甜 程尊鹏 尹乐乐 柴步飞 任静静 刘芳辰 景然 WANG Yixin;CHUI Pengfei;LI Wengang;FENG Tian;CHENG Zunpeng;YIN Lele;CHAI Bufei;REN Jingjing;LIU Fangchen;JING Ran(School of Materials Science and Engineering,Shaanxi University of Technology,Hanzhong 723000,China;National and Local Joint Engineering Laboratory for Slag Comprehensive Utilization and Environmental Technology,Shaanxi University of Technology,Hanzhong 723000,China)

机构地区：[1]陕西理工大学材料科学与工程学院,陕西汉中723000 [2]陕西理工大学矿渣综合利用环保技术国家地方联合工程实验室,陕西汉中723000

出　　处：《铸造技术》2022年第3期187-190,共4页Foundry Technology

基　　金：国家自然科学基金项目(51701111);陕西省教育厅科研计划项目(19JK0184,21JK0560);大学生创新创业训练项目(2020-003);陕西理工大学科研项目(SLG2109)。

摘　　要：采用真空熔炼炉制备了不同成分的Ti-Zr-Nb-Mo合金,借助光学显微镜(OM)、X-射线衍射仪(XRD)、万能试验机、电化学工作站对合金的组织与性能进行了研究。结果表明,随着Mo含量的增加,铸态Ti-Zr-Nb-Mo合金均为单一的β相,其衍射峰向高角度发生偏移,合金的平均晶粒尺寸先减小后增大。其中,铸态(TiZr)_(80)Nb_(10)Mo_(10)合金的平均晶粒尺寸最小。此外,随着Mo含量的增加,合金的强度和硬度显著提高,铸态(TiZr)_(75)Nb_(10)Mo_(15)合金的屈服强度和硬度最高,分别为887 MPa和471 HV。铸态(TiZr)_(80)Nb_(10)Mo_(10)合金的自腐蚀电位为-261.1 mV,自腐蚀电流密度为354.5 nA·cm^(-2),耐蚀性良好。Ti-Zr-Nb-Mo alloys with different compositions were prepared by vacuum melting furnace.The microstructure and properties of the alloy were studied by means of optical microscope(OM),X-ray diffractometer(XRD),universal testing machine and electrochemical workstation.The results show that with the increase of Mo content,the as-cast Ti-Zr-Nb-Mo alloy is a singleβphase,and the diffraction peak shifts to a higher angle,and the average grain size of the alloy decreases first and then increases.Among them,the average grain size of as-cast(TiZr)_(80)Nb_(10)Mo_(10)alloy is the smallest.The yield strength and hardness of as-cast(TiZr)_(75)Nb_(10)Mo_(15)alloy are the highest,887 MPa and 471 HV,respectively,with the increase of Mo content.The corrosion resistance of as-cast(ZrTi)_(80)Nb_(10)Mo_(10)alloy is good,self-corrosion potential and self-corrosion current density are-261.1 mV and 354.5 nA·cm^(-2),respectively.

关 键 词：Ti-Zr-Nb-Mo合金 显微组织 力学性能 腐蚀性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程] TG113[金属学及工艺—金属材料]