title: Microstructure and mechanical properties of Ti-Zr-Cr biomedical alloys.
abstract: The Ti-15Zr-xCr (0≤x≤10, wt.%) alloys were investigated to develop new biomedical materials. It was found that the phase constitutions and mechanical properties strongly depended on the Cr content. The Ti-15Zr alloy was comprised of α' phase and a small fraction of β phase was detected with adding 1wt.% Cr. With addition of 5wt.% or more, the β phase was completely retained. In addition, the ω phase was detected in the Ti-15Zr-5Cr alloy and Ti-15Zr-7Cr alloy which exhibited the highest compressive Young's modulus and the lowest ductility. On the other hand, all the Ti-15Zr-xCr alloys without ω phase exhibited high microhardness, high yield strength and superior ductility. Furthermore, the elastic energy of Ti-15Zr-10Cr alloy (5.89MJ/m(3)) with only β phase and that of Ti-15Zr-3Cr alloy (4.04MJ/m(3)) with α' phase and small fraction of β phase was higher than the elastic energy of c.p. Ti (1.25MJ/m(3)). This study demonstrated that Ti-15Zr-3Cr alloy and Ti-15Zr-10Cr alloy with superior mechanical properties are potential materials for biomedical applications.
authors.affiliation: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China; Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, Singapore 638075, Singapore. Electronic address: wangpangh@163.com.
authors.forename: Pan
authors.initials: P
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Solidification Processing, School of Materials, Northwestern Polytechnical University, 127# YouYi West Road, Xi'an 710072, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Feng
authors.affiliation: Joining and Welding Research Institute, Osaka University, Ibaraki 567-0047, Japan.
authors.forename: Fengchao
authors.initials: F
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China. Electronic address: wlh@zzu.edu.cn.
authors.forename: Lihong
authors.initials: L
authors.lastname: Wu
authors.affiliation: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China.
authors.forename: Shaokang
authors.initials: S
authors.lastname: Guan
mesh_terms: D000497:Alloys / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry*; D019245:Compressive Strength; D055119:Elastic Modulus; D006244:Hardness; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength; D014025:Titanium / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; D002857:Chromium; D014025:Titanium; D015032:Zinc
keywords: Biomaterials; Mechanical properties; Microstructure; Titanium alloy