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

页码：17 / 23

页数：7

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