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Influence of heat treatment and ECAP on the mechanical properties, microstructure, and corrosion behaviour of a micro alloyed magnesium

  • Michal Krzyzanowski (Corresponding / Lead Author)
  • , Adarsh Rai (Corresponding / Lead Author)
  • , Gaetano Palumbo
  • , Szymon Bajda
  • , Krystian Sokolowski
  • , Jakub Kawalko
  • , Paulina Lisiecka-Graca
  • , Piotr Bala
  • , Bjorn Wiese
  • AGH University of Krakow
  • Helmholtz-Zentrum Hereon, Institute of Metallic Biomaterials, Functional Magnesium Materials

Research output: Contribution to journalReview articlepeer-review

Abstract

This work explores Mg-Zn-Ca material, with novel grain size achieved through equal channel angular pressing (ECAP). Experimental studies indicate that the mechanical properties of the ECAP-treated alloy have been significantly improved compared to those of the initial alloys. Finite element analysis (FEA) was employed to simulate the process, confirming that the characteristic high-shear-strain bands responsible for grain refinement were successfully induced. The formation of MgCaSi and Ca2Mg6Zn3 phases helped to improve the corrosion resistance behaviour of both heat-treated and ECAP-processed alloys. While its overall corrosion resistance was similar to that of the heat-treated alloy, the ECAP-processed alloy showed enhanced resistance to pitting corrosion. This improvement is due to a more uniform protective layer as corrosion product, microstructure homogenization, and finer grains produced during the ECAP process. The protective layers in phosphate-buffered saline (PBS) solution, primarily consisting of phosphates and carbonates, were analysed using X-ray photo electron spectroscopy (XPS). These findings suggest that the Mg-Zn-Ca alloy processed by ECAP is a promising candidate for biomedical application due to its superior mechanical and corrosion-resistant properties.
Original languageEnglish
Pages (from-to)3685
Number of pages3701
JournalJournal of Materials Research and Technology
Volume42
DOIs
Publication statusPublished (VoR) - 5 Apr 2026

Funding

The support provided by the National Science Center, Poland (grant no. 2024/53/B/ST11/00799).

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