The effect of high-pressure torsion on the microstructure and properties of magnesium
The effect of high-pressure torsion on the microstructure and properties of magnesium
High-pressure torsion provides the opportunity to introduce significant plastic strain at room temperature in magnesium and its alloys. It is now established that this processing operation produces ultrafine-grained structures and changes the properties of these materials. The present paper shows that the mechanism of grain refinement differs from f.c.c. and b.c.c. materials. It is shown that fine grains are formed at the grain boundaries of coarse grains and gradually consume the whole structure. Also, the processed material exhibits unusual mechanical properties due to the activation of grain boundary sliding at room temperature.
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Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Sabbaghianrad, Shima
2dbc35ee-f341-42fd-9081-94ef3e9b10b0
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2017
Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Sabbaghianrad, Shima
2dbc35ee-f341-42fd-9081-94ef3e9b10b0
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Figueiredo, Roberto B., Sabbaghianrad, Shima and Langdon, Terence G.
(2017)
The effect of high-pressure torsion on the microstructure and properties of magnesium.
IOP Conference Series: Materials Science and Engineering, 194, , [012039].
(doi:10.1088/1757-899X/194/1/012039).
Abstract
High-pressure torsion provides the opportunity to introduce significant plastic strain at room temperature in magnesium and its alloys. It is now established that this processing operation produces ultrafine-grained structures and changes the properties of these materials. The present paper shows that the mechanism of grain refinement differs from f.c.c. and b.c.c. materials. It is shown that fine grains are formed at the grain boundaries of coarse grains and gradually consume the whole structure. Also, the processed material exhibits unusual mechanical properties due to the activation of grain boundary sliding at room temperature.
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Figueiredo-NanoSPD7-revised
- Accepted Manuscript
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Figueiredo_2017_IOP_Conf._Ser.__Mater._Sci._Eng._194_012039
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Accepted/In Press date: 12 April 2017
e-pub ahead of print date: 8 May 2017
Published date: 2017
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 407847
URI: http://eprints.soton.ac.uk/id/eprint/407847
ISSN: 1757-899X
PURE UUID: 2a7f23b6-274f-455d-9f92-1a58f3d5b2b5
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Date deposited: 27 Apr 2017 01:04
Last modified: 16 Mar 2024 05:15
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Author:
Roberto B. Figueiredo
Author:
Shima Sabbaghianrad
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