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

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

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 antimicrobial 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 significantly 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.
Original languageEnglish
Article number145676
Number of pages12
JournalMaterials Science and Engineering: A
Volume886
Early online date9 Sept 2023
DOIs
Publication statusPublished - 17 Oct 2023

Bibliographical note

Acknowledgments:
YTZ acknowledges the support from the Ministry of Science and Technology of China (2021YFA1200202), the National Natural Science Foundation of China (11988103), the Hong Kong Research Grants Council (GRF-11214121) and the Hong Kong Institute for Advanced Study of City University of Hong Kong. LRR acknowledges the funding from the Programa de Apoyo a la Investigación y el Posgrado (PAIP-50009223) of the Chemistry College of Universidad Nacional Autónoma de México. MN thanks the Asia-Oceania Neutron Scattering Association (AONSA) for the award of the AONSA Young Research Fellowship (YRF-2022).

Keywords

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

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