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Fabrication and Mechanical Properties of Porous Fe Skeleton-Reinforced Mg-Zn-Ca-Sr Bulk Metallic Glass Composites
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Fabrication and Mechanical Properties of Porous Fe Skeleton-Reinforced Mg-Zn-Ca-Sr Bulk Metallic Glass Composites
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Journal Article
Fabrication and Mechanical Properties of Porous Fe Skeleton-Reinforced Mg-Zn-Ca-Sr Bulk Metallic Glass Composites
2026
Overview
Mg-Zn-Ca bulk metallic glasses (BMGs) have attracted significant attention in the field of biodegradable metallic biomaterials due to their desirable in vivo degradability and high strength. However, their relatively high brittleness limits further practical applications. In this work, porous Fe skeleton-reinforced Mg-Zn-Ca bulk metallic glass composites (BMGCs) were fabricated by pressure infiltration using porous Fe skeleton as the toughening phase and Mg66Zn30Ca3Sr1 alloy as the matrix. It was found that electroless copper plating improved the interfacial wettability between molten Mg and Fe, as well as the infiltration-forming capability of the BMGCs. Quasi-static compression tests showed that the BMGC exhibited a compressive strength of 500 MPa, a plastic strain of 0.2%, and a yield strength of 420 MPa, representing a significant improvement over the matrix BMG alloy. The fracture surface displayed a vein-like pattern, indicating a noticeable transition from brittle to ductile fracture behavior. Thus, the porous Fe skeleton-reinforced Mg-Zn-Ca BMGC shows promise as a potential biodegradable biomedical material. Moreover, the preparation route presented here offers a new perspective for developing degradable Mg-Zn-Ca-based BMGCs.
