@article{Chai2025, 
author = {Fang Chai and Jianqiang Feng and Xinghui Han and Wuhao Zhuang and Yizhe Chen and Zhili Hu and Xuan Hu and Fangyan Zheng and Lin Hua},
title = {Microstructure and mechanical properties of ZK61 magnesium alloy thin-walled cylindrical component processed by two-step forging},
year = {2025},
journal = {Journal of Magnesium and Alloys},
volume = {13},
number = {5},
pages = {2416-2432},
keywords = {Magnesium alloy, Thin-walled cylindrical component, Two-step forging, Microstructure, Mechanical properties},
url = {https://www.sciopen.com/article/10.1016/j.jma.2025.02.033},
doi = {10.1016/j.jma.2025.02.033},
abstract = {Magnesium alloy thin-walled cylindrical components with the advantages of high specific stiffness and strength present broad prospect for the lightweight of aerospace components. However, poor formability resulting from the hexagonal close-packed crystal structure in magnesium alloy puts forwards a great challenge for thin-walled cylindrical components fabrication, especially for extreme structure with the thickness-changing web and the high thin-wall. In this research, an ZK61 magnesium alloy thin-walled cylindrical component was successfully fabricated by two-step forging, i.e., the pre-forging and final-forging is mainly used for wed and thin-wall formation, respectively. Microstructure and mechanical properties at the core, middle and margin of the web and the thin-wall of the pre-forged and final-forged components are studied in detail. Due to the large strain-effectiveness and metal flow along the radial direction (RD), the grains of the web are all elongated along RD for the pre-forged component, where an increasingly elongated trend is found from the core to the margin of the wed. A relatively low recrystallized degree occurs during pre-forging, and the web at different positions are all with prismatic and pyramid textures. During final-forging, the microstructures of the web and the thin-wall are almost equiaxed due to the remarkable occurrence of dynamic recrystallization. Similarity, except for few basal texture of the thin-wall, only prismatic and pyramid textures are found for the final-forged component. Compared with the initial billet, an obviously improved mechanical isotropy is achieved during pre-forging, which is well-maintained during final-forging.}
}