Effects of C Doping on the Structure and Functional Characteristics of Fe-Mn Alloys after Equal Channel Angular Pressing

Abstract:

A comparative study of the structure and properties of two biodegradable Fe – 27Mn and Fe – 27Mn – C alloys for biomedical use after equal channel angular pressing (ECAP) has been carried out. It is noted that addition of carbon in the alloy leads to a change in the mechanism of plastic deformation from the formation of martensite to deformation twinning in austenite. ECAP improves the strength characteristics of the alloys under study and the corrosion rate by refining the structure and increasing the dislocation density. The presence of a partially twinned structure in the Fe – 27Mn – C alloy results in a lower corrosion rate despite a stronger refinement of the alloy structure after ECAP.

• Periodical: Key Engineering Materials (Volume 967)
• Pages: 101-106
• DOI: https://doi.org/10.4028/p-4NhwOj
• Online since: December 2023
• Authors: Olga V. Rybalchenko*, Natalia Martynenko, Georgy Rybalchenko, Natalia Tabachkova, Igor Shchetinin, Dmitriy Prosvirnin, Elena Lukyanova, Andrey Koltygin, Arseniy Raab, Sergey V. Dobatkin
• Keywords: Corrosion Rate, Equal Channel Angular Pressing, Fe-Mn Alloys, Strength, Twinning, Ultrafine-Grained Structure

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