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A comparison of repetitive corrugation and straightening and high-pressure torsion using an Al-Mg-Sc alloy

A comparison of repetitive corrugation and straightening and high-pressure torsion using an Al-Mg-Sc alloy
A comparison of repetitive corrugation and straightening and high-pressure torsion using an Al-Mg-Sc alloy
A comparative study was conducted to evaluate the influence of two different severe plastic deformation (SPD) processes: repetitive corrugation and straightening (RCS) and high-pressure torsion (HPT). Samples of an Al-3Mg-0.25Sc alloy with an initial grain size of ?150 ?m were processed by RCS through 8 passes at room temperature either without any rotation during processing or with a rotation of 90° around the longitudinal axis between each pass. Thin discs of the alloy were also processed for up to 5 turns by HPT at room temperature. The results show that both procedures introduce significant grain refinement with average grain sizes of ?0.6–0.7 ?m after RCS and ?95 nm after HPT. Measurements of the Vickers microhardness gave values of ?128 after RCS and ?156 after HPT. The results demonstrate that processing by HPT is the optimum processing technique in achieving both high strength and microstructural homogeneity.
2238-7854
353-359
Bhovi, Prabhakar M.
5ffe0c9f-e25f-43ca-a151-fd021ed00bf1
Patil, Deepak C.
15e31ec0-b96c-4a4c-8696-08e3232304ee
Kori, S.A.
592448fc-f4cb-49a6-a9af-c218b656f79c
Venkateswarlu, K.
5bdfe52c-a221-4f27-83fa-638f30e91bb0
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Bhovi, Prabhakar M.
5ffe0c9f-e25f-43ca-a151-fd021ed00bf1
Patil, Deepak C.
15e31ec0-b96c-4a4c-8696-08e3232304ee
Kori, S.A.
592448fc-f4cb-49a6-a9af-c218b656f79c
Venkateswarlu, K.
5bdfe52c-a221-4f27-83fa-638f30e91bb0
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Bhovi, Prabhakar M., Patil, Deepak C., Kori, S.A., Venkateswarlu, K., Huang, Yi and Langdon, Terence G. (2016) A comparison of repetitive corrugation and straightening and high-pressure torsion using an Al-Mg-Sc alloy. Journal of Materials Research and Technology, 5 (4), 353-359. (doi:10.1016/j.jmrt.2016.03.009).

Record type: Article

Abstract

A comparative study was conducted to evaluate the influence of two different severe plastic deformation (SPD) processes: repetitive corrugation and straightening (RCS) and high-pressure torsion (HPT). Samples of an Al-3Mg-0.25Sc alloy with an initial grain size of ?150 ?m were processed by RCS through 8 passes at room temperature either without any rotation during processing or with a rotation of 90° around the longitudinal axis between each pass. Thin discs of the alloy were also processed for up to 5 turns by HPT at room temperature. The results show that both procedures introduce significant grain refinement with average grain sizes of ?0.6–0.7 ?m after RCS and ?95 nm after HPT. Measurements of the Vickers microhardness gave values of ?128 after RCS and ?156 after HPT. The results demonstrate that processing by HPT is the optimum processing technique in achieving both high strength and microstructural homogeneity.

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More information

Accepted/In Press date: 30 March 2016
e-pub ahead of print date: 14 June 2016
Published date: 1 December 2016
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 396893
URI: http://eprints.soton.ac.uk/id/eprint/396893
ISSN: 2238-7854
PURE UUID: 928da173-91f3-41cd-806b-84b76878756b
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

Catalogue record

Date deposited: 15 Jun 2016 14:26
Last modified: 10 Dec 2019 01:47

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Contributors

Author: Prabhakar M. Bhovi
Author: Deepak C. Patil
Author: S.A. Kori
Author: K. Venkateswarlu
Author: Yi Huang ORCID iD

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