title: Deformation behavior of metastable β-type Ti-25Nb-2Mo-4Sn alloy for biomedical applications.
abstract: The deformation behavior of metastable β-type Ti-25Nb-2Mo-4Sn (wt%) alloy subjected to different thermo-mechanical treatments was discussed by the combining results from transmission electron microscope, tensile test and in-situ synchrotron X-ray diffraction. Visible "double yielding" behavior, which is characterized by the presence of stress-plateau, was observed in the solution treated specimen. Upon a cold rolling treatment, the Ti-25Nb-2Mo-4Sn alloy performs nonlinear deformation because of the combined effects of elastic deformation and stress-induced α″ martensitic transformation. After the subsequent annealing, the β phase is completely stabilized and no stress-induced martensitic transformation takes place on loading due to the inhibitory effect of grain boundaries and dislocations on martensitic transformation. As a result, the annealed specimen exhibits linear elastic deformation.
authors.affiliation: Institute for Advanced Materials, Jiangsu University, Zhenjiang 212013, China; School of Materials Science and Engineering, Beihang University, Beijing 100191, China. Electronic address: shunguo@ujs.edu.cn.
authors.forename: S
authors.initials: S
authors.lastname: Guo
authors.affiliation: School of Materials Science and Engineering, Beihang University, Beijing 100191, China.
authors.forename: Q K
authors.initials: QK
authors.lastname: Meng
authors.affiliation: Institute for Advanced Materials, Jiangsu University, Zhenjiang 212013, China.
authors.forename: X N
authors.initials: XN
authors.lastname: Cheng
authors.affiliation: School of Materials Science and Engineering, Beihang University, Beijing 100191, China. Electronic address: xinqing@buaa.edu.cn.
authors.forename: X Q
authors.initials: XQ
authors.lastname: Zhao
mesh_terms: D000497:Alloys / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry*; D008422:Materials Testing; D055595:Mechanical Phenomena; D008982:Molybdenum / Q000737:chemistry; D009556:Niobium / Q000737:chemistry; D013314:Stress, Mechanical; D013696:Temperature; D013718:Tensile Strength; D014001:Tin / Q000737:chemistry; D014025:Titanium / Q000737:chemistry
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; D009556:Niobium; D014001:Tin; D008982:Molybdenum; D014025:Titanium
keywords: Deformation behavior; In-situ synchrotron X-ray diffraction; Martensitic transformation; Metastable β Ti alloy