Examining the thermal stability of an Al-Mg-Sc alloy processed by high-pressure torsion
Authors: Pereira, P.H.R., Huang, Y. and Langdon, T.G.
Journal: Materials Research
Volume: 20
Pages: 39-45
ISSN: 1516-1439
DOI: 10.1590/1980-5373-MR-2017-0207
Abstract:An Al-3%Mg-0.2%Sc alloy was solution treated and subjected to 10 turns of high-pressure torsion (HPT). Thereafter, the HPT-processed material 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 EBSD analysis. The results demonstrate that the Al-Mg-Sc alloy exhibits an average microhardness of ∼190 Hv and an average grain size of ∼140 nm immediately after HPT processing and also after further annealing at 423 K. Conversely, it is shown that annealing at temperatures above 473 K leads to a substantial decrease in the hardness values as well as a sharp increase in the grain size of the material previously processed by HPT. In addition, detailed EBSD analysis revealed the formation of a bi-modal distribution of grains after annealing at temperatures from 623 to 773 K, and this becomes more uniform with increasing temperatures.
Source: Scopus
Examining the Thermal Stability of an Al-Mg-Sc Alloy Processed by High-Pressure Torsion
Authors: Pereira, P.H.R., Huang, Y. and Langdon, T.G.
Journal: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
Volume: 20
Pages: 39-45
eISSN: 1980-5373
ISSN: 1516-1439
DOI: 10.1590/1980-5373-MR-2017-0207
Source: Web of Science (Lite)
Examining the thermal stability of an Al-Mg-Sc alloy processed by high-pressure torsion
Authors: Pereira, P.H.R., Huang, Y. and Langdon, T.G.
Conference: NanoMat2017: The 7th Latin-Aamerican Conference on Nanostructured and Metastable Materials
Dates: 19-22 March 2017
Journal: Materials Research
Volume: 20
Pages: 39-45
ISSN: 1516-1439
DOI: 10.1590/1980-5373-MR-2017-0207
Abstract:© 2017 Universidade Federal de Sao Carlos. All rights reserved. An Al-3%Mg-0.2%Sc alloy was solution treated and subjected to 10 turns of high-pressure torsion (HPT). Thereafter, the HPT-processed material 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 EBSD analysis. The results demonstrate that the Al-Mg-Sc alloy exhibits an average microhardness of ∼190 Hv and an average grain size of ∼140 nm immediately after HPT processing and also after further annealing at 423 K. Conversely, it is shown that annealing at temperatures above 473 K leads to a substantial decrease in the hardness values as well as a sharp increase in the grain size of the material previously processed by HPT. In addition, detailed EBSD analysis revealed the formation of a bi-modal distribution of grains after annealing at temperatures from 623 to 773 K, and this becomes more uniform with increasing temperatures.
Source: Manual
Preferred by: Yi Huang