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Enhancement in mechanical properties of a beta-titanium alloy by high-pressure torsion

Enhancement in mechanical properties of a beta-titanium alloy by high-pressure torsion
Enhancement in mechanical properties of a beta-titanium alloy by high-pressure torsion
Titanium alloys, mainly Ti–6Al–4V, are commonly used in biomedical applications as orthopedic implants. Due to the potential toxic influence of V and Al cations on health, a new alloy composition, Ti–24Nb–4Zr–8Sn, was introduced. However, Ti–24Nb–4Zr–8Sn has a much lower tensile strength by comparison with the Ti–6Al–4V alloy. The aim of this research was to determine whether high-pressure torsion (HPT) can be an efficient method for obtaining the desired properties in the case of the Ti–24Nb–4Zr–8Sn beta-titanium alloy. This paper presents an analysis of the microstructural and mechanical properties of the Ti–24Nb–4Zr–8Sn alloy processed by HPT with various processing parameters. The obtained microstructures were examined using transmission electron microscopy (TEM). Mechanical properties, such as hardness and tensile strength, were also measured. The study demonstrates that HPT of the Ti–24Nb–4Zr–8Sn alloy leads to a significant reduction of grain size and this grain refinement gives a major improvement in tensile strength and hardness.
?-titanium alloys, high-pressure torsion, grain size refinement, mechanical properties
2238-7854
79-83
Sharman, Katarzyna
afa38895-d9b9-48fb-8bf6-d721d95ad4b4
Bazarnik, Piotr
844b4a15-226a-4275-9cee-812669fa033c
Brynk, Tomasz
3a77815b-8a4a-4a51-a9e1-3d0ef7dd705f
Bulutsuz, Asli G.
fe8634e4-bad6-4648-9fba-c878aa16ee16
Lewandowska, Malgorzata
c574d02d-d34d-4164-8ed1-90c3d77584d2
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Sharman, Katarzyna
afa38895-d9b9-48fb-8bf6-d721d95ad4b4
Bazarnik, Piotr
844b4a15-226a-4275-9cee-812669fa033c
Brynk, Tomasz
3a77815b-8a4a-4a51-a9e1-3d0ef7dd705f
Bulutsuz, Asli G.
fe8634e4-bad6-4648-9fba-c878aa16ee16
Lewandowska, Malgorzata
c574d02d-d34d-4164-8ed1-90c3d77584d2
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Sharman, Katarzyna, Bazarnik, Piotr, Brynk, Tomasz, Bulutsuz, Asli G., Lewandowska, Malgorzata, Huang, Yi and Langdon, Terence G. (2015) Enhancement in mechanical properties of a beta-titanium alloy by high-pressure torsion. Journal of Materials Research and Technology, 4, 79-83. (doi:10.1016/j.jmrt.2014.10.010).

Record type: Article

Abstract

Titanium alloys, mainly Ti–6Al–4V, are commonly used in biomedical applications as orthopedic implants. Due to the potential toxic influence of V and Al cations on health, a new alloy composition, Ti–24Nb–4Zr–8Sn, was introduced. However, Ti–24Nb–4Zr–8Sn has a much lower tensile strength by comparison with the Ti–6Al–4V alloy. The aim of this research was to determine whether high-pressure torsion (HPT) can be an efficient method for obtaining the desired properties in the case of the Ti–24Nb–4Zr–8Sn beta-titanium alloy. This paper presents an analysis of the microstructural and mechanical properties of the Ti–24Nb–4Zr–8Sn alloy processed by HPT with various processing parameters. The obtained microstructures were examined using transmission electron microscopy (TEM). Mechanical properties, such as hardness and tensile strength, were also measured. The study demonstrates that HPT of the Ti–24Nb–4Zr–8Sn alloy leads to a significant reduction of grain size and this grain refinement gives a major improvement in tensile strength and hardness.

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More information

Published date: 28 February 2015
Keywords: ?-titanium alloys, high-pressure torsion, grain size refinement, mechanical properties
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 370821
URI: http://eprints.soton.ac.uk/id/eprint/370821
ISSN: 2238-7854
PURE UUID: 0704a3fc-a4b7-4501-ac85-730ac7203942
ORCID for Yi Huang: ORCID iD orcid.org/0000-0001-9259-8123
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

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Date deposited: 01 Dec 2014 14:38
Last modified: 15 Mar 2024 03:39

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Contributors

Author: Katarzyna Sharman
Author: Piotr Bazarnik
Author: Tomasz Brynk
Author: Asli G. Bulutsuz
Author: Malgorzata Lewandowska
Author: Yi Huang ORCID iD

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