Structure, Biodegradation, and In Vitro Bioactivity of Zn–1%Mg Alloy Strengthened by High-Pressure Torsion

Natalia Martynenko; Natalia Anisimova; Olga Rybalchenko; Mikhail Kiselevskiy; Georgy Rybalchenko; Natalia Tabachkova; Mark Zheleznyi; Diana Temralieva; Viacheslav Bazhenov; Andrey Koltygin; Andrey Sannikov; Sergey Dobatkin

doi:10.3390/ma15249073

Materials (Dec 2022)

Structure, Biodegradation, and In Vitro Bioactivity of Zn–1%Mg Alloy Strengthened by High-Pressure Torsion

Natalia Martynenko,
Natalia Anisimova,
Olga Rybalchenko,
Mikhail Kiselevskiy,
Georgy Rybalchenko,
Natalia Tabachkova,
Mark Zheleznyi,
Diana Temralieva,
Viacheslav Bazhenov,
Andrey Koltygin,
Andrey Sannikov,
Sergey Dobatkin

Affiliations

Natalia Martynenko: A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences, Leninskiy Prospect, 49, 119334 Moscow, Russia
Natalia Anisimova: A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences, Leninskiy Prospect, 49, 119334 Moscow, Russia
Olga Rybalchenko: A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences, Leninskiy Prospect, 49, 119334 Moscow, Russia
Mikhail Kiselevskiy: Center for Biomedical Engineering, National University of Science and Technology “MISIS”, 119049 Moscow, Russia
Georgy Rybalchenko: P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
Natalia Tabachkova: A.M. Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
Mark Zheleznyi: A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences, Leninskiy Prospect, 49, 119334 Moscow, Russia
Diana Temralieva: A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences, Leninskiy Prospect, 49, 119334 Moscow, Russia
Viacheslav Bazhenov: Casting Department, National University of Science and Technology “MISIS”, 119049 Moscow, Russia
Andrey Koltygin: Casting Department, National University of Science and Technology “MISIS”, 119049 Moscow, Russia
Andrey Sannikov: A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences, Leninskiy Prospect, 49, 119334 Moscow, Russia
Sergey Dobatkin: A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences, Leninskiy Prospect, 49, 119334 Moscow, Russia

DOI: https://doi.org/10.3390/ma15249073
Journal volume & issue: Vol. 15, no. 24
p. 9073

Abstract

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The effect of high-pressure torsion (HPT) on the microstructure, phase composition, mechanical characteristics, degradation rate, and bioactive properties of the Zn–1%Mg alloy is studied. An ultrafine-grained (UFG) structure with an average grain size of α-Zn equal to 890 ± 26 nm and grains and subgrains of the Mg2Zn11 and MgZn2 phases with a size of 50–100 nm are formed after HPT. This UFG structure leads to an increase in the ultimate tensile strength of the alloy by ~3 times with an increase in elongation to 6.3 ± 3.3% due to the formation of a basal texture. The study of corrosion resistance did not show a significant effect of HPT on the degradation rate of the alloy. In addition, no significant changes in the bioactivity of the alloy after HPT: hemolysis, cellular colonization and Escherichia coli growth inhibition.

Published in Materials

ISSN: 1996-1944 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering; Technology: Engineering (General). Civil engineering (General); Science: Natural history (General): Microscopy; Science: Physics: Descriptive and experimental mechanics
Website: http://www.mdpi.com/journal/materials/

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