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Gunderov D, Kim K, Gunderova S, Churakova A, Lebedev Y, Nafikov R, Derkach M, Lukashevich K, Sheremetyev V, Prokoshkin S. Effect of High-Pressure Torsion and Annealing on the Structure, Phase Composition, and Microhardness of the Ti-18Zr-15Nb (at. %) Alloy. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1754. [PMID: 36837384 PMCID: PMC9959511 DOI: 10.3390/ma16041754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/09/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
The Ti-18Zr-15Nb shape memory alloys are a new material for medical implants. The regularities of phase transformations during heating of this alloy in the coarse-grained quenched state and the nanostructured state after high-pressure torsion have been studied. The specimens in quenched state (Q) and HPT state were annealed at 300-550 °C for 0.5, 3, and 12 h. The α-phase formation in Ti-18Zr-15Nb alloy occurs by C-shaped kinetics with a pronounced peak near 400-450 °C for Q state and near 350-450 °C for HPT state, and stops or slows down at higher and lower annealing temperatures. The formation of a nanostructured state in the Ti-18Zr-15Nb alloy as a result of HPT suppresses the β→ω phase transformation during low-temperature annealing (300-350 °C), but activates the β→α phase transformation. In the Q-state the α-phase during annealing at 450-500 °C is formed in the form of plates with a length of tens of microns. The α-phase formed during annealing of nanostructured specimens has the appearance of nanosized particle-grains of predominantly equiaxed shape, distributed between the nanograins of β-phase. The changes in microhardness during annealing of Q-specimens correlate with changes in phase composition during aging.
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Affiliation(s)
- Dmitry Gunderov
- Department of Materials Science and Physics of Metals, Ufa University of Science and Technology, Zaki Validi St. 32, 450076 Ufa, Russia
- Laboratory of Solid State Physics, Institute of Molecule & Crystal Physics, UFRC RAS, 151 Prospect Oktyabrya, 450075 Ufa, Russia
| | - Karina Kim
- Department of Materials Science and Physics of Metals, Ufa University of Science and Technology, Zaki Validi St. 32, 450076 Ufa, Russia
- Laboratory of Solid State Physics, Institute of Molecule & Crystal Physics, UFRC RAS, 151 Prospect Oktyabrya, 450075 Ufa, Russia
| | - Sofia Gunderova
- Department of Materials Science and Physics of Metals, Ufa University of Science and Technology, Zaki Validi St. 32, 450076 Ufa, Russia
- Laboratory of Solid State Physics, Institute of Molecule & Crystal Physics, UFRC RAS, 151 Prospect Oktyabrya, 450075 Ufa, Russia
| | - Anna Churakova
- Department of Materials Science and Physics of Metals, Ufa University of Science and Technology, Zaki Validi St. 32, 450076 Ufa, Russia
- Laboratory of Solid State Physics, Institute of Molecule & Crystal Physics, UFRC RAS, 151 Prospect Oktyabrya, 450075 Ufa, Russia
| | - Yuri Lebedev
- Laboratory of Solid State Physics, Institute of Molecule & Crystal Physics, UFRC RAS, 151 Prospect Oktyabrya, 450075 Ufa, Russia
| | - Ruslan Nafikov
- Department of Materials Science and Physics of Metals, Ufa University of Science and Technology, Zaki Validi St. 32, 450076 Ufa, Russia
| | - Mikhail Derkach
- Metal Forming Department, National University of Science and Technology “MISiS”, Leninsky Ave. 4, p. 1., 119049 Moscow, Russia
| | - Konstantin Lukashevich
- Metal Forming Department, National University of Science and Technology “MISiS”, Leninsky Ave. 4, p. 1., 119049 Moscow, Russia
| | - Vadim Sheremetyev
- Metal Forming Department, National University of Science and Technology “MISiS”, Leninsky Ave. 4, p. 1., 119049 Moscow, Russia
| | - Sergey Prokoshkin
- Metal Forming Department, National University of Science and Technology “MISiS”, Leninsky Ave. 4, p. 1., 119049 Moscow, Russia
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Developing Nanostructured Ti Alloys for Innovative Implantable Medical Devices. MATERIALS 2020; 13:ma13040967. [PMID: 32098084 PMCID: PMC7078807 DOI: 10.3390/ma13040967] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 02/11/2020] [Accepted: 02/14/2020] [Indexed: 11/24/2022]
Abstract
Recent years have witnessed much progress in medical device manufacturing and the needs of the medical industry urges modern nanomaterials science to develop novel approaches for improving the properties of existing biomaterials. One of the ways to enhance the material properties is their nanostructuring by using severe plastic deformation (SPD) techniques. For medical devices, such properties include increased strength and fatigue life, and this determines nanostructured Ti and Ti alloys to be an excellent choice for the engineering of implants with improved design for orthopedics and dentistry. Various reported studies conducted in this field enable the fabrication of medical devices with enhanced functionality. This paper reviews recent development in the field of nanostructured Ti-based materials and provides examples of the use of ultra-fine grained Ti alloys in medicine.
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Schmidt R, Pilz S, Lindemann I, Damm C, Hufenbach J, Helth A, Geissler D, Henss A, Rohnke M, Calin M, Zimmermann M, Eckert J, Lee M, Gebert A. Powder metallurgical processing of low modulus β-type Ti-45Nb to bulk and macro-porous compacts. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2017.09.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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