Segregation behaviors in {101¯1} compressive twin boundaries of Mg-RE alloy under deformation at room temperature

Yujie Cui; Lili Guo; Yunwei Gui; Kenta Aoyagi; Haotian Tong; Qinqin Wei; Fangzhou Liu; Yuichiro Hayasaka; Akihiko Chiba

Journal of Magnesium and Alloys (Jan 2025)

Segregation behaviors in {101¯1} compressive twin boundaries of Mg-RE alloy under deformation at room temperature

Yujie Cui,
Lili Guo,
Yunwei Gui,
Kenta Aoyagi,
Haotian Tong,
Qinqin Wei,
Fangzhou Liu,
Yuichiro Hayasaka,
Akihiko Chiba

Affiliations

Yujie Cui: 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; Corresponding author at: Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Lili Guo: Beijing Advanced Innovation Center for Materials Genome Engineering, 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
Yunwei Gui: School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; Corresponding author.
Kenta Aoyagi: Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
Haotian Tong: 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
Qinqin Wei: School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
Fangzhou Liu: Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
Yuichiro Hayasaka: The Electron Microscopy Center, Tohoku University, Sendai 980-8577, Japan
Akihiko Chiba: Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan

Journal volume & issue: Vol. 13, no. 1
pp. 330 – 337

Abstract

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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 {101¯1} 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 {101¯1} compressive twins. This research indicates the twin boundaries can be strengthened by segregated solutes and precipitates formed under deformation at room temperature.

Published in Journal of Magnesium and Alloys

ISSN: 2213-9567 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.keaipublishing.com/en/journals/journal-of-magnesium-and-alloys/

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