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Effect of temperature rise on microstructural evolution during high-pressure torsion

Effect of temperature rise on microstructural evolution during high-pressure torsion
Effect of temperature rise on microstructural evolution during high-pressure torsion
Dynamic recrystallization occurs at room temperature during high-pressure torsion (HPT) leading to the formation of ultrafine grains with high angles of misorientation. There are questions concerning whether dynamic recrystallization occurs due to the temperature rise during severe plastic deformation or due to the effect of lattice defects. In this study, the real temperature rise was measured by directly placing a thermocouple separately on disc samples of tin, aluminum, silver, copper and titanium. The measurements, which are consistent with finite element simulations, show that the temperature rise is of minor significance in initiating dynamic recrystallization. A relationship is developed to predict the temperature rise in HPT.
0921-5093
167-171
Edalati, Kaveh
ca70a7e0-bcb8-4a62-bddb-f7a6cbcad803
Hashiguchi, Yuki
d2bcb30d-504c-4ebb-84fe-cdf5398e18ec
Pereira, Pedro Henrique R.
9ee129fd-0e06-482d-990c-971aaf83b1d0
Horita, Zenji
5833cebd-a889-4eaa-a5f6-8343e27790d6
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Edalati, Kaveh
ca70a7e0-bcb8-4a62-bddb-f7a6cbcad803
Hashiguchi, Yuki
d2bcb30d-504c-4ebb-84fe-cdf5398e18ec
Pereira, Pedro Henrique R.
9ee129fd-0e06-482d-990c-971aaf83b1d0
Horita, Zenji
5833cebd-a889-4eaa-a5f6-8343e27790d6
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Edalati, Kaveh, Hashiguchi, Yuki, Pereira, Pedro Henrique R., Horita, Zenji and Langdon, Terence G. (2018) Effect of temperature rise on microstructural evolution during high-pressure torsion. Materials Science and Engineering: A, 714, 167-171. (doi:10.1016/j.msea.2017.12.095).

Record type: Article

Abstract

Dynamic recrystallization occurs at room temperature during high-pressure torsion (HPT) leading to the formation of ultrafine grains with high angles of misorientation. There are questions concerning whether dynamic recrystallization occurs due to the temperature rise during severe plastic deformation or due to the effect of lattice defects. In this study, the real temperature rise was measured by directly placing a thermocouple separately on disc samples of tin, aluminum, silver, copper and titanium. The measurements, which are consistent with finite element simulations, show that the temperature rise is of minor significance in initiating dynamic recrystallization. A relationship is developed to predict the temperature rise in HPT.

Text Kaveh-MSEA-final - Accepted Manuscript
Restricted to Repository staff only until 27 December 2018.
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More information

Accepted/In Press date: 26 December 2017
e-pub ahead of print date: 27 December 2017
Published date: 31 January 2018

Identifiers

Local EPrints ID: 416707
URI: https://eprints.soton.ac.uk/id/eprint/416707
ISSN: 0921-5093
PURE UUID: 4a0445db-3757-4413-b973-e749fe1ee048
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 05 Jan 2018 17:30
Last modified: 06 Jun 2018 12:48

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Contributors

Author: Kaveh Edalati
Author: Yuki Hashiguchi
Author: Pedro Henrique R. Pereira
Author: Zenji Horita

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