Strengthening dual-phase Mg-Li alloy through precipitation control

被引：2
作者：
Huang, Yuchuan [1 ]
Qi, Fangzhou [1 ]
Sun, Jiawei [1 ]
Xu, Yangyang [1 ]
Guo, Youjie [1 ]
Yu, Jiaxin [1 ]
Yi, Lingfan [1 ]
Tao, Xinmiao [1 ]
Wu, Guohua [1 ]
Liu, Wencai [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composite, Shanghai 200240, Peoples R China
来源：
MATERIALS RESEARCH LETTERS | 2025年 / 13卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Mg-Li alloy; aging; precipitation; phase transformations; mechanical properties; MECHANICAL-PROPERTIES; HEAT-TREATMENT; MAGNESIUM; MICROSTRUCTURE; TRANSFORMATION;
D O I：
10.1080/21663831.2024.2409232
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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<middle dot>m<middle dot>kg-1. Precipitates evolution during non-isothermal aging was investigated: strip-like Mg3(Al, Zn) in beta-Li -> globular Mg3(Al, Zn) in beta-Li -> Mg/Li(Al, Zn) core-shell and nanoscale rod-like Mg3(Al, Zn) in beta-Li + Laves phase in alpha-Mg. The short-term high-temperature aging results in the precipitation of Laves phase in alpha-Mg and the formation of nanoscale rod-like Mg3(Al, Zn) and Mg/Li(Al, Zn) core-shell phase in beta-Li, achieving synergistic strengthening of the dual matrix phases.
引用
收藏
页码：17 / 23
页数：7
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