Zhao, T;
Hu, Y;
Wang, Y;
Dai, Y;
Zheng, T;
Li, Z;
Li, K;
... Pan, F; + view all
(2023)
Deformation mechanism of high ductility Mg-Gd-Mn alloy during tensile process.
Journal of Magnesium and Alloys
10.1016/j.jma.2023.10.004.
(In press).
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Abstract
In this research, a high ductility Mg-Gd-Mn magnesium alloy was designed and developed, with an elongation capability surpassing 50%. To gain insights into the underlying mechanism behind the high ductility of the Mg-2Gd-0.5Mn alloy, quasi-in-situ electron backscattered diffraction and two-beam diffraction were conducted. The results reveal that the Mg-Gd-Mn alloy exhibits a distinct rare-earth texture, and the activation of non-basal slip systems is evident from the clear observation of non-basal slip traces during the later stages of deformation. However, the primary deformation mechanisms in Mg-Gd-Mn alloy remain basal <a> slip and {10–12} tensile twinning, and the remarkable ductility observed in Mg-Gd-Mn alloys can be attributed to the softening of non-basal slip modes, which leads to a coordinated deformation between various modes of deformation. To further validate this conclusion, an analysis was conducted using a visco-plastic self-consistent (VPSC) model to investigate the relative activity of basal and non-basal slip in Mg-Gd-Mn alloys. The obtained results align well with experimental observations, providing additional support for the hypothesis.
| Type: | Article |
|---|---|
| Title: | Deformation mechanism of high ductility Mg-Gd-Mn alloy during tensile process |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jma.2023.10.004 |
| Publisher version: | https://doi.org/10.1016/j.jma.2023.10.004 |
| Language: | English |
| Additional information: | © 2023 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
| Keywords: | Magnesium alloys; Ductility; Quasi-in-situ EBSD; Slip; Twinning |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10185407 |
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