title: Functional fatigue behavior of superelastic beta Ti-22Nb-6Zr(at%) alloy for load-bearing biomedical applications.
abstract: Ti-22Nb-6Zr (at.%) alloy with different processing-induced microstructures (highly-dislocated partially recovered substructure, polygonized nanosubgrained (NSS) dislocation substructure, and recrystallized structure) was subjected to strain-controlled tension-tension fatigue testing in the 0.2...1.5% strain range (run-out at 10^6 cycles). The NSS alloy obtained after cold-rolling with 0.3 true strain and post-deformation annealing at 600 °C showed the lowest Young's modulus and globally superior fatigue performance due to the involvement of reversible stress-induced martensitic transformation in the deformation process. This NSS structure appears to be suitable for biomedical applications with an extended variation range of loading conditions (orthopedic implants).
authors.affiliation: Department of Plastic Deformation of Special Alloys, National University of Science and Technology "MISIS", 4 Leninskiy prosp., Moscow 119049, Russian Federation.
authors.forename: V
authors.initials: V
authors.lastname: Sheremetyev
authors.affiliation: Department of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame Street West, Montreal, QC, H3C 1K3, Canada. Electronic address: vladimir.brailovski@etsmtl.ca.
authors.forename: V
authors.initials: V
authors.lastname: Brailovski
authors.affiliation: Department of Plastic Deformation of Special Alloys, National University of Science and Technology "MISIS", 4 Leninskiy prosp., Moscow 119049, Russian Federation.
authors.forename: S
authors.initials: S
authors.lastname: Prokoshkin
authors.affiliation: Department of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame Street West, Montreal, QC, H3C 1K3, Canada.
authors.forename: K
authors.initials: K
authors.lastname: Inaekyan
authors.affiliation: Department of Plastic Deformation of Special Alloys, National University of Science and Technology "MISIS", 4 Leninskiy prosp., Moscow 119049, Russian Federation.
authors.forename: S
authors.initials: S
authors.lastname: Dubinskiy
mesh_terms: D000497:Alloys / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry*; D055119:Elastic Modulus; D046529:Microscopy, Electron, Transmission; D009556:Niobium / Q000737:chemistry; D013314:Stress, Mechanical; D013696:Temperature; D014025:Titanium / Q000737:chemistry; D016474:Weight-Bearing; D014961:X-Ray Diffraction; D015040:Zirconium / Q000737:chemistry
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; D009556:Niobium; D015040:Zirconium; D014025:Titanium
keywords: Biomaterials; Fatigue; Shape memory alloys; Superelasticity; Thermomechanical treatment