Mechanical behavior and microstructure properties of titanium powder consolidated by high-pressure torsion
Mechanical behavior and microstructure properties of titanium powder consolidated by high-pressure torsion
Research was conducted to investigate the potential for consolidating titanium powder using high-pressure torsion (HPT) at room temperature. The nanostructured samples processed by HPT were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results show there is a significant refinement of the Ti powder and it consolidates into bulk nanostructured titanium with a mean grain size estimated by TEM as ~200–300 nm and a mean crystallite size measured by XRD as ~20–30 nm. Microhardness measurements and tensile testing show high strength and low ductility after consolidation under a pressure of 6.0 GPa for 5 revolutions. Additional short annealing at a temperature of 300 °C for 10 minutes leads to a significant enhancement in ductility while maintaining the high strength.
498-504
Zhilyaev, Alex P.
d053e518-1976-4633-8953-e8f34b9b7c44
Ringot, Geoffrey
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Huang, Yi
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Cabrera, Jose Maria
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Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
14 March 2017
Zhilyaev, Alex P.
d053e518-1976-4633-8953-e8f34b9b7c44
Ringot, Geoffrey
0adbc51a-329c-40ad-9e78-360e6b2ff940
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Cabrera, Jose Maria
f5c890d2-f395-4bb2-bcdf-2ad0c1b98717
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Zhilyaev, Alex P., Ringot, Geoffrey, Huang, Yi, Cabrera, Jose Maria and Langdon, Terence G.
(2017)
Mechanical behavior and microstructure properties of titanium powder consolidated by high-pressure torsion.
Materials Science and Engineering: A, 688, .
(doi:10.1016/j.msea.2017.02.032).
Abstract
Research was conducted to investigate the potential for consolidating titanium powder using high-pressure torsion (HPT) at room temperature. The nanostructured samples processed by HPT were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results show there is a significant refinement of the Ti powder and it consolidates into bulk nanostructured titanium with a mean grain size estimated by TEM as ~200–300 nm and a mean crystallite size measured by XRD as ~20–30 nm. Microhardness measurements and tensile testing show high strength and low ductility after consolidation under a pressure of 6.0 GPa for 5 revolutions. Additional short annealing at a temperature of 300 °C for 10 minutes leads to a significant enhancement in ductility while maintaining the high strength.
Text
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Accepted/In Press date: 7 January 2017
e-pub ahead of print date: 8 February 2017
Published date: 14 March 2017
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 405684
URI: http://eprints.soton.ac.uk/id/eprint/405684
ISSN: 0921-5093
PURE UUID: c4f5dd01-b0cf-4d90-83f5-301e3331ad93
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Date deposited: 10 Feb 2017 15:06
Last modified: 16 Mar 2024 04:07
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Contributors
Author:
Alex P. Zhilyaev
Author:
Geoffrey Ringot
Author:
Yi Huang
Author:
Jose Maria Cabrera
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