Production of ultrafine-grain bioinert alloys

Abstract

The microstructure and mechanical properties of bioinert titanium, zirconium, and niobium alloys in the ultrafine-grain state are investigated. The ultrafine-grain structure is obtained by severe plastic deformation, including multicyclic abc pressing at specified temperatures, multipass rolling in shaped rollers at room temperature, and low-temperature non-recrystallizing annealing. Annealing increases the plasticity of the ultrafine-grain alloys, without changing the grain size. As a result of two-stage treatment—severe plastic deformation and annealing—ultrafine-grain structure with grains and subgrains of mean size 0.16–0.25 μm is formed. That considerably improves the mechanical properties (ultimate strength, yield point, and microhardness) of the alloys. At the same time, the formation of ultrafine-grain structure in the alloys does not change the elastic modulus, even with considerable increase in the ultimate strength and plasticity.

Original language	English
Pages (from-to)	116-119
Number of pages	4
Journal	Steel in Translation
Volume	45
Issue number	2
DOIs	https://doi.org/10.3103/S096709121502014X
Publication status	Published - 1 Mar 2015

Keywords

bioinert alloys
mechanical properties
microstructure
severe plastic deformation
titanium alloys
ultrafine-grain state
zirconium alloys

ASJC Scopus subject areas

Materials Science(all)

Access to Document

10.3103/S096709121502014X

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Sharkeev, Y. P., Eroshenko, A. Y., Danilov, V. I., Glukhov, I. A., & Tolmachev, A. I. (2015). Production of ultrafine-grain bioinert alloys. Steel in Translation, 45(2), 116-119. https://doi.org/10.3103/S096709121502014X

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title = "Production of ultrafine-grain bioinert alloys",

abstract = "The microstructure and mechanical properties of bioinert titanium, zirconium, and niobium alloys in the ultrafine-grain state are investigated. The ultrafine-grain structure is obtained by severe plastic deformation, including multicyclic abc pressing at specified temperatures, multipass rolling in shaped rollers at room temperature, and low-temperature non-recrystallizing annealing. Annealing increases the plasticity of the ultrafine-grain alloys, without changing the grain size. As a result of two-stage treatment—severe plastic deformation and annealing—ultrafine-grain structure with grains and subgrains of mean size 0.16–0.25 μm is formed. That considerably improves the mechanical properties (ultimate strength, yield point, and microhardness) of the alloys. At the same time, the formation of ultrafine-grain structure in the alloys does not change the elastic modulus, even with considerable increase in the ultimate strength and plasticity.",

keywords = "bioinert alloys, mechanical properties, microstructure, severe plastic deformation, titanium alloys, ultrafine-grain state, zirconium alloys",

author = "Sharkeev, {Yu P.} and Eroshenko, {A. Yu} and Danilov, {V. I.} and Glukhov, {I. A.} and Tolmachev, {A. I.}",

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AU - Sharkeev, Yu P.

AU - Eroshenko, A. Yu

AU - Danilov, V. I.

AU - Glukhov, I. A.

AU - Tolmachev, A. I.

PY - 2015/3/1

Y1 - 2015/3/1

N2 - The microstructure and mechanical properties of bioinert titanium, zirconium, and niobium alloys in the ultrafine-grain state are investigated. The ultrafine-grain structure is obtained by severe plastic deformation, including multicyclic abc pressing at specified temperatures, multipass rolling in shaped rollers at room temperature, and low-temperature non-recrystallizing annealing. Annealing increases the plasticity of the ultrafine-grain alloys, without changing the grain size. As a result of two-stage treatment—severe plastic deformation and annealing—ultrafine-grain structure with grains and subgrains of mean size 0.16–0.25 μm is formed. That considerably improves the mechanical properties (ultimate strength, yield point, and microhardness) of the alloys. At the same time, the formation of ultrafine-grain structure in the alloys does not change the elastic modulus, even with considerable increase in the ultimate strength and plasticity.

AB - The microstructure and mechanical properties of bioinert titanium, zirconium, and niobium alloys in the ultrafine-grain state are investigated. The ultrafine-grain structure is obtained by severe plastic deformation, including multicyclic abc pressing at specified temperatures, multipass rolling in shaped rollers at room temperature, and low-temperature non-recrystallizing annealing. Annealing increases the plasticity of the ultrafine-grain alloys, without changing the grain size. As a result of two-stage treatment—severe plastic deformation and annealing—ultrafine-grain structure with grains and subgrains of mean size 0.16–0.25 μm is formed. That considerably improves the mechanical properties (ultimate strength, yield point, and microhardness) of the alloys. At the same time, the formation of ultrafine-grain structure in the alloys does not change the elastic modulus, even with considerable increase in the ultimate strength and plasticity.

KW - bioinert alloys

KW - mechanical properties

KW - microstructure

KW - severe plastic deformation

KW - titanium alloys

KW - ultrafine-grain state

KW - zirconium alloys

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