Document Type
Journal Article
Publication Title
Materials
Volume
16
Issue
13
Publisher
MDPI
School
School of Engineering / Centre for Advanced Materials and Manufacturing
RAS ID
62058
Funders
National Natural Science Foundation of China / Science and Technology Development Program of Jilin Province, China / Natural Science Foundation of Chongqing
Abstract
It is well known that the development of lightweight alloys with improved comprehensive performance and application value are the future development directions for the ultra-high-strength 7xxx series Al-Zn-Mg-Cu alloys used in the aircraft field. As the lightest metal element in nature, lithium (Li) has outstanding advantages in reducing the density and increasing the elastic modulus in aluminum alloys, so Al-Zn-Mg-Cu alloys containing Li have gained widespread attention. Furthermore, since the Al-Zn-Mg-Cu alloy is usually strengthened by aging treatment, it is crucial to understand how Li addition affects its aging precipitation process. As such, in this article, the effects and mechanism of Li on the aging precipitation behavior and the impact of Li content on the aging precipitation phase of Al-Zn-Mg-Cu alloys are briefly reviewed, and the influence of Li on the service properties, including mechanical properties, wear resistance, and fatigue resistance, of Al-Zn-Mg-Cu alloys are explained. In addition, the corresponding development prospects and challenges of the Al-Zn-Mg-Cu-Li alloy are also proposed. This review is helpful to further understand the role of Li in Al-Zn-Mg-Cu alloys and provides a reference for the development of high-strength aluminum alloys containing Li with good comprehensive properties.
DOI
10.3390/ma16134750
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Comments
Sun, J. R., Dong, B. X., Yang, H. Y., Shu, S. L., Qiu, F., Jiang, Q. C., & Zhang, L. C. (2023). The role of lithium in the aging precipitation process of al-zn-mg-cu alloys and its effect on the properties. Materials, 16(13), article 4750. https://doi.org/10.3390/ma16134750