FORMING OF BIOINERT ULTRAFINE-GRAINED ALLOYS
https://doi.org/10.17073/0368-0797-2015-2-112-116
Abstract
The paper presents the results of a research of microstructure and mechanical properties of bioinert alloys based on titanium, zirconium and niobium in ultrafi ne-grained condition. Ultrafi ne-grained condition was received by a combined method of severe plastic deformation, which included high-cycle abc-pressing at a given temperature regime, a multi-pass rolling in shaped rolls at room temperature and low temperature prerecrystallization annealing. The annealing increased the plasticity of alloys in ultrafi ne-grained condition without changing the grain size. In the two-stage severe plastic deformation and annealing the ultrafi ne-grained structure was formed in the alloys. The average element size of the grain-subgrain structure was 0.16 – 0.25 μm, which provided a signifi cant improvement in mechanical properties (ultimate strength, yield strength and microhardness) of the alloys compared to their original hard-grained or fi ne-crystalline conditions. At the same time, the formation of ultrafi ne-grained conditions in alloys did not lead to any change in the elastic modulus with a signifi cant increase in their strength and plasticity.
About the Authors
Yu. P. Sharkeev
Institute of Strength Physics and Materials Science of the SB RAS, National Research Tomsk Polytechnic University
Russian Federation
Russian Federation
Dr. Sci. (Phys.-math.), Professor, Нead of the Laboratory of Physics of Nanostructured Biocomposites
A. Yu. Eroshenko
Institute of Strength Physics and Materials Science of the SB RAS
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Researcher of the Laboratory of Physics of Nanostructured Biocomposites
V. I. Danilov
Institute of Strength Physics and Materials Science of the SB RAS
Russian Federation
Russian Federation
Dr. Sci. (Phys.-math.), Professor, Chief Researcher of the Laboratory of Physics of Nanostructured
Biocomposites
I. A. Glukhov
Institute of Strength Physics and Materials Science of the SB RAS
Russian Federation
Russian Federation
Technologist of the Laboratory of Physics of Nanostructured Biocomposites
A. I. Tolmachev
Institute of Strength Physics and Materials Science of the SB RAS, Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
Chief Specialist of the Laboratory of Physics of Nanostructured Biocomposites
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19.
Review
For citations:
Sharkeev Yu.P., Eroshenko A.Yu., Danilov V.I., Glukhov I.A., Tolmachev A.I. FORMING OF BIOINERT ULTRAFINE-GRAINED ALLOYS. Izvestiya. Ferrous Metallurgy. 2015;58(2):112-116. (In Russ.) https://doi.org/10.17073/0368-0797-2015-2-112-116
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