Electron Beam Melted Beta-type Ti–24Nb–4Zr–8Sn Porous Structures With High Strength-to-Modulus Ratio  

作　　者：Yujing Liu Shujun Li Wentao Hou Shaogang Wang Yulin Hao Rui Yang Timothy B.Sercombe Lai-Chang Zhang 

机构地区：[1]School of Engineering,Edith Cowan University [2]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences [3]School of Mechanical and Chemical Engineering,The University of Western Australia

出　　处：《Journal of Materials Science & Technology》2016年第6期505-508,共4页材料科学技术（英文版）

基　　金：supported partially by the National High-Tech R&D Program of China(863 Program,No.2015AA033702);the National Basic Research Program of China(Nos.2012CB619103 and 2012CB933901);the National Natural Science Foundation of China(Nos.51271182 and 51501200);the Australian Research Council Discovery Project(Nos.DP110101653 and DP130103592)

摘　　要：Electron beam melting （EBM） has been used to manufacture β-type Ti-24Nb-4Zr-8Sn porous compo- nents with 70% porosity, EBM-produced components have favorable structural features （i.e. smooth strut surfaces, fewer defects） and an （α ＋ β）-type microstructure, similar to that subjected to aging treat- ment. EBM-produced components exhibit more than twice the strength-to-modulus ratio of porous Ti- 6A1-4V components having the same porosity. The processing-microstructure-property relationship and deformation behavior of EBM-produced components are discussed in detail. Such porous titanium com- ponents composed of non-toxic elements and having high strength-to-modulus ratio are highly attractive for biomedical applications.Electron beam melting （EBM） has been used to manufacture β-type Ti-24Nb-4Zr-8Sn porous compo- nents with 70% porosity, EBM-produced components have favorable structural features （i.e. smooth strut surfaces, fewer defects） and an （α ＋ β）-type microstructure, similar to that subjected to aging treat- ment. EBM-produced components exhibit more than twice the strength-to-modulus ratio of porous Ti- 6A1-4V components having the same porosity. The processing-microstructure-property relationship and deformation behavior of EBM-produced components are discussed in detail. Such porous titanium com- ponents composed of non-toxic elements and having high strength-to-modulus ratio are highly attractive for biomedical applications.

关 键 词：Titanium alloys Electron beam melting Porous material Mechanical properties Microstructure 

分 类 号：TF823[冶金工程—有色金属冶金] R318.08[医药卫生—生物医学工程]