An ultra-light Mg-Li alloy with exceptional elastic modulus, high strength, and corrosion-resistance

被引：28

作者：

Tian, Guangyuan ^{[1
]}

Wang, Junsheng ^{[1
,2
]}

Wang, Shuo ^{[1
]}

Xue, Chengpeng ^{[1
]}

Yang, Xinghai ^{[1
]}

Su, Hui ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, 5 South Zhongguancun St, Beijing 100081, Peoples R China

[2] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, 5 South Zhongguancun St, Beijing 100081, Peoples R China

来源：

MATERIALS TODAY COMMUNICATIONS | 2023年 / 35卷

基金：

中国国家自然科学基金;

关键词：

Mg-Li alloy; Modulus; Strength; Hardness; Corrosion; Heat treatment; MECHANICAL-PROPERTIES; AS-CAST; HEAT-TREATMENT; MIXTURE RULE; MAGNESIUM; MICROSTRUCTURE; BEHAVIOR; INDENTATION; GD; MN;

D O I：

10.1016/j.mtcomm.2023.105623

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a new Mg-Li alloy with exceptional Young's modulus, great specific strength, and outstanding corrosion-resistance has been successfully developed, exceeding any reported values of elastic modulus of currently available for Mg alloys. The newly invented alloy reaches an elastic modulus of 60.83 GPa after heat treatment and a corrosion rate of 0.989 mm per year without any surface treatment. X-ray computed tomography and nanoindentation have proven the 3D distribution of hard secondary phases (AlLi and Al-X) with average equivalent diameters of 4.1 mu m and 5.1 mu m influencing modulus, hardness, and corrosion rate.

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