Strengthening dual-phase Mg-Li alloy through precipitation control

Yuchuan Huang; Fangzhou Qi; Jiawei Sun; Yangyang Xu; Youjie Guo; Jiaxin Yu; Lingfan Yi; Xinmiao Tao; Guohua Wu; Wencai Liu

doi:10.1080/21663831.2024.2409232

Materials Research Letters (Oct 2024)

Strengthening dual-phase Mg-Li alloy through precipitation control

Yuchuan Huang,
Fangzhou Qi,
Jiawei Sun,
Yangyang Xu,
Youjie Guo,
Jiaxin Yu,
Lingfan Yi,
Xinmiao Tao,
Guohua Wu,
Wencai Liu

Affiliations

Yuchuan Huang: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Fangzhou Qi: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Jiawei Sun: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Yangyang Xu: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Youjie Guo: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Jiaxin Yu: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Lingfan Yi: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Xinmiao Tao: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Guohua Wu: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Wencai Liu: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China

DOI: https://doi.org/10.1080/21663831.2024.2409232

Abstract

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Inherent low strength is the major limitation of Mg-Li alloys. Through precise control of precipitates, the cast Mg-8Li-3Al-2Zn alloy obtained a high specific ultimate tensile strength of 213 kN·m·kg−1. Precipitates evolution during non-isothermal aging was investigated: strip-like Mg3(Al, Zn) in β-Li → globular Mg3(Al, Zn) in β-Li →Mg/Li(Al, Zn) core–shell and nanoscale rod-like Mg3(Al, Zn) in β-Li + Laves phase in α-Mg. The short-term high-temperature aging results in the precipitation of Laves phase in α-Mg and the formation of nanoscale rod-like Mg3(Al, Zn) and Mg/Li(Al, Zn) core–shell phase in β-Li, achieving synergistic strengthening of the dual matrix phases.

Published in Materials Research Letters

ISSN: 2166-3831 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.tandfonline.com/journals/tmrl

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