Examining the microhardness evolution and thermal stability of an Al-Mg-Sc alloy processed by high-pressure torsion at a high temperature
Examining the microhardness evolution and thermal stability of an Al-Mg-Sc alloy processed by high-pressure torsion at a high temperature
An Al-3%Mg-0.2%Sc alloy was solution treated and processed through 10 turns of high-pressure torsion (HPT) at 450 K. Afterwards, the HPT-processed alloy was annealed for 1 hour at temperatures ranging from 423 to 773 K and its mechanical properties and microstructural evolution were examined using microhardness measurements and electron backscattered diffraction (EBSD) analysis. The results demonstrate that HPT processing at an elevated temperature leads to a more uniform microhardness distribution and to an early saturation in the hardness values in the Al alloy compared with high-pressure torsion at room temperature. In addition, detailed EBSD analysis conducted on the HPT-processed samples immediately after annealing revealed that the Al-Mg-Sc alloy subjected to HPT processing at 450 K exhibits superior thermal stability by comparison with the same material subjected to HPT at 300 K.
348-354
Pereira, Pedro H.R.
9ee129fd-0e06-482d-990c-971aaf83b1d0
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
30 November 2017
Pereira, Pedro H.R.
9ee129fd-0e06-482d-990c-971aaf83b1d0
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Pereira, Pedro H.R., Huang, Yi and Langdon, Terence G.
(2017)
Examining the microhardness evolution and thermal stability of an Al-Mg-Sc alloy processed by high-pressure torsion at a high temperature.
Journal of Materials Research and Technology, 6 (4), .
(doi:10.1016/j.jmrt.2017.05.008).
Abstract
An Al-3%Mg-0.2%Sc alloy was solution treated and processed through 10 turns of high-pressure torsion (HPT) at 450 K. Afterwards, the HPT-processed alloy was annealed for 1 hour at temperatures ranging from 423 to 773 K and its mechanical properties and microstructural evolution were examined using microhardness measurements and electron backscattered diffraction (EBSD) analysis. The results demonstrate that HPT processing at an elevated temperature leads to a more uniform microhardness distribution and to an early saturation in the hardness values in the Al alloy compared with high-pressure torsion at room temperature. In addition, detailed EBSD analysis conducted on the HPT-processed samples immediately after annealing revealed that the Al-Mg-Sc alloy subjected to HPT processing at 450 K exhibits superior thermal stability by comparison with the same material subjected to HPT at 300 K.
Text
Pedro_JMRT2017_accepted manuscript
- Accepted Manuscript
More information
Accepted/In Press date: 23 May 2017
e-pub ahead of print date: 20 June 2017
Published date: 30 November 2017
Organisations:
Engineering Mats & Surface Engineerg Gp, Education Hub
Identifiers
Local EPrints ID: 411873
URI: http://eprints.soton.ac.uk/id/eprint/411873
ISSN: 2238-7854
PURE UUID: f74b22c8-fa8c-4dc0-bce8-f1572fe7e222
Catalogue record
Date deposited: 27 Jun 2017 16:32
Last modified: 16 Mar 2024 05:22
Export record
Altmetrics
Contributors
Author:
Pedro H.R. Pereira
Author:
Yi Huang
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics