Processing and microstructure of bioresorbable Zn/Mg multi-materials manufactured by additive friction stir deposition

作者：Yidi Li, Yidi Li, Biaobiao Yang, Juan Guillermo Santos Macías, Hui Wang, Yunping Li, Yunping Li, Javier LLorca · 发表于：Journal of Alloys and Compounds · 年份：2025 · DOI：10.1016/j.jallcom.2025.181342 · 被引用次数：6 · 研究领域：Magnesium Alloys: Properties and Applications、Aluminum Alloys Composites Properties、Advanced Welding Techniques Analysis

This work explores the development of novel Zn/Mg multi-materials for biomedical applications by leveraging the complementary properties of Mg (bone-matching elastic modulus, rapid degradation) and Zn (moderate strength, slower degradation rate). Additive friction stir deposition, a solid-state manufacturing process, is used to manufacture Zn/Mg multi-materials. Microstructural analysis reveals a well-defined three-layer interface structure consisting of a mixture of Mg + MgZn, nm-sized grains of MgZn 2 , and nm-sized grains of Mg 2 Zn 11 phases from the Mg side to the Zn side. The interface region was fully dense, free of cracks, and showed substantial capability of plastic accommodation which was able to relieve stress concentrations through different mechanisms. These findings highlight the potential of additive friction stir deposition to control the thickness and structure of the Zn/Mg interface and pave the way for the manufacturing of Zn/Mg multi-material components for biomedical applications. • Manufacturing of Mg-Zn multimaterials by additive friction stir deposition is demonstrated for the first time. • The interface region was fully dense, free of cracks, and showed substantial capability of plastic accommodation. • These results pave the way for the manufacturing of Zn/Mg multi-material components for biomedical applications.