Achieving antimicrobial and superior mechanical properties in a scalable and cost-effective heterostructured stainless steel

作者：Romero-Resendiz, L.; Kong, H. J.; Zhang, T.; Ni, H.; Chen, S.; Naeem, M.; Zhu, Y. T.^*

来源：Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing , 2023, 886: 145676.

DOI：10.1016/j.msea.2023.145676

• Heterostructured materials
• Stainless steel
• Antimicrobial
• Strengthening mechanisms
• Mechanical properties

Heterostructured materials (HSMs) can alleviate the strength-ductility trade-off of conventional materials. Microstructure modulation by low-cost and large-scalable thermo-mechanical treatments is a feasible route to produce HSMs. Using these thermo-mechanical treatments, we have developed new heterostructured and anti-microbial stainless steels (HS&ASSs) to reduce the infection rate of multiple diseases while increasing their service life. The HS&ASSs were designed to combine several known strengthening mechanisms, which signifi-cantly improved the yield strength compared to their homogeneous counterparts while retaining good ductility. Effective antibacterial property is also observed in the HS&ASSs. The microstructural evolution and processing-microstructure-properties relationship are thoroughly explained. This work demonstrates that the improved mechanical properties of HSMs can be successfully combined with multifunctional properties, thus opening a new window for this fast-emerging field.

• 单位
  东莞理工学院; y