Microstructure and hardness evolution in magnesium processed by HPT
Microstructure and hardness evolution in magnesium processed by HPT
High pressure torsion provides an opportunity to process materials with low formability such as magnesium at room temperature. The present work shows the microstructure evolution in commercially pure magnesium processed using a pressure of 6.0GPa up to 10 turns of rotation. The microstructure evolution is evaluated using electron microscopy and the hardness is determined using dynamic hardness testing. The results show that the grain refinement mechanism in this material differs from materials with b.c.c. and f.c.c. structures. The mechanism of grain refinement observed at high temperatures also applies at room temperature. The hardness distribution is heterogeneous along the longitudinal section of the discs and is not affected by the amount of deformation imposed to the material.
2-7
Silva, Cláudio L. P.
31f2345d-1c45-4ad0-9319-fbe10fc5c9ac
Tristão, Isabela C.
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Sabbaghianrad, Shima
2dbc35ee-f341-42fd-9081-94ef3e9b10b0
Torbati-Sarraf, Seyed A.
09f9c894-5804-42c4-9b79-18268d0a899e
Figueiredo, Roberto B.
8fb6251c-f4d3-418c-acae-0835a4f56e15
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
31 December 2017
Silva, Cláudio L. P.
31f2345d-1c45-4ad0-9319-fbe10fc5c9ac
Tristão, Isabela C.
d4afedbc-c06d-406c-ac00-b1410fb6e7f0
Sabbaghianrad, Shima
2dbc35ee-f341-42fd-9081-94ef3e9b10b0
Torbati-Sarraf, Seyed A.
09f9c894-5804-42c4-9b79-18268d0a899e
Figueiredo, Roberto B.
8fb6251c-f4d3-418c-acae-0835a4f56e15
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Silva, Cláudio L. P., Tristão, Isabela C., Sabbaghianrad, Shima, Torbati-Sarraf, Seyed A., Figueiredo, Roberto B. and Langdon, Terence G.
(2017)
Microstructure and hardness evolution in magnesium processed by HPT.
Materials Research, 20 (S1), .
(doi:10.1590/1980-5373-MR-2017-0223).
Abstract
High pressure torsion provides an opportunity to process materials with low formability such as magnesium at room temperature. The present work shows the microstructure evolution in commercially pure magnesium processed using a pressure of 6.0GPa up to 10 turns of rotation. The microstructure evolution is evaluated using electron microscopy and the hardness is determined using dynamic hardness testing. The results show that the grain refinement mechanism in this material differs from materials with b.c.c. and f.c.c. structures. The mechanism of grain refinement observed at high temperatures also applies at room temperature. The hardness distribution is heterogeneous along the longitudinal section of the discs and is not affected by the amount of deformation imposed to the material.
Text
Figueiredo_Nanomat2017_manuscript
- Accepted Manuscript
More information
Accepted/In Press date: 27 July 2017
e-pub ahead of print date: 12 September 2017
Published date: 31 December 2017
Identifiers
Local EPrints ID: 412877
URI: http://eprints.soton.ac.uk/id/eprint/412877
ISSN: 1516-1439
PURE UUID: ddccda24-c353-444e-a556-3de850e47bef
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Date deposited: 07 Aug 2017 13:07
Last modified: 16 Mar 2024 05:36
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Contributors
Author:
Cláudio L. P. Silva
Author:
Isabela C. Tristão
Author:
Shima Sabbaghianrad
Author:
Seyed A. Torbati-Sarraf
Author:
Roberto B. Figueiredo
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