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Full Length Article | Open Access

Segregation behaviors in {1011} compressive twin boundaries of Mg-RE alloy under deformation at room temperature

Yujie Cuia,b,c( ), Lili Guoa,c, Yunwei Guid( ), Kenta Aoyagie, Haotian Tonge,f, Qinqin Weig, Fangzhou Liue, Yuichiro Hayasakah, Akihiko Chibae
Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China
Key Laboratory for Advanced Materials Processing (MOE), University of Science and Technology Beijing, Beijing 100083, China
Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
Department of Materials Science and Engineering, Jilin University, 5988 Renmin Street, Changchun, Jilin 130025, China
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
The Electron Microscopy Center, Tohoku University, Sendai 980-8577, Japan
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Abstract

Solute atoms and precipitates significantly influence the mechanical properties of Mg alloys. Previous studies have mainly focused on the segregation behaviors of Mg alloys after annealing. In this study, we investigated the segregation behaviors of an Mg-RE alloy under deformation. We found that the enrichment of solute atoms occurred in {1011} compressive twin boundaries under compression at 298 K without any annealing in an Mg-RE alloy by scanning transmission electron microscopy and energy-dispersive X-ray analysis. The segregated solutes and precipitates impeded the twin growth, partially contributing to the formation of small-sized {1011} compressive twins. This research indicates the twin boundaries can be strengthened by segregated solutes and precipitates formed under deformation at room temperature.

Keywords

Magnesium alloysCompression testScanning/transmission electron microscopy (STEM)SegregationTwin boundaries

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Journal of Magnesium and Alloys
Volume 13 Issue 1,
January 2025
Pages 330-337
DOI: 10.1016/j.jma.2024.05.023

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Cite this article:
Cui Y, Guo L, Gui Y, et al. Segregation behaviors in {1011} compressive twin boundaries of Mg-RE alloy under deformation at room temperature. Journal of Magnesium and Alloys, 2025, 13(1): 330-337. https://doi.org/10.1016/j.jma.2024.05.023

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Received: 25 October 2023
Revised: 12 April 2024
Accepted: 17 May 2024
Published: 08 June 2024
© 2024 Chongqing University.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer review under responsibility of Chongqing University