J. Mater. Sci. Technol. ›› 2026, Vol. 265: 177-189.DOI: 10.1016/j.jmst.2025.11.037

• Research Article • Previous Articles     Next Articles

Nano-heterostructured Fe-Mn-Se alloys with high strength-plasticity synergy, rapid degradability, low magnetism, and antitumor activity for orthopedic applications

Bo Denga, Dechuang Zhanga,*, Yilong Daia, Lin Guoa, Sihan Linb,c,*, Jixing Lind, Xian Tongd, Wei Xionge, Paul Wrightf, Yuncang Lig, Cuie Wena,g,*   

  1. aSchool of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China;
    bDepartment of Periodontology, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai 201102, China;
    cShanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai 201102, China;
    dInstitute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China;
    eDepartment of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15260, USA;
    fSchool of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria 3083, Australia;
    gCentre for Additive Manufacturing, School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
  • Received:2025-10-18 Revised:2025-11-10 Accepted:2025-11-15 Published:2026-09-10 Online:2025-11-29
  • Contact: * E-mail addresses: dczhang@xtu.edu.cn (D. Zhang), linsihan0729@126.com (S. Lin), cuie.wen@rmit.edu.au (C. Wen).

Abstract: Biodegradable Fe-based alloys face significant challenges, including the strength-plasticity trade-off and limited biofunctionality, which severely restrict their clinical orthopedic application in orthopedics. Here, we report on a nano-heterostructural Fe-15Mn-0.6Se (wt.%) alloy with low magnetism, ultrahigh strength-elongation product, and potent antibacterial and antitumor capabilities. Due to its alternating nano-layered heterostructure of γ/ε/γ (γ-austenite, ε-martensite), the Fe-15Mn-0.6Se alloy exhibited extraordinary comprehensive mechanical properties with a yield strength of 1463 ± 5 MPa, an ultimate tensile strength of 1511 ± 4 MPa, and a fracture strain of 29 % ± 3 %. Moreover, this alloy showed superb antibacterial activity against Staphylococcus aureus, in vitro osteogenic bioactivity, and biocompatibility toward MC3T3-E1 pre-osteoblast cells, and also effective antitumor activity against MG63 osteosarcoma cells. In the rat jaw defect model, this alloy showed complete biosafety and exceptional osteogenic properties. Overall, the Fe-15Mn-0.6Se alloy is a promising biodegradable bone implant material due to its unique mechanical and biofunctional properties.

Key words: Fe-Mn-Se alloy, Heterostructure, Antibacterial property, Antitumor activity, Magnetic susceptibility, Mechanical property