20.500.12556/DiRROS-21405 Enhanced performance of austenitic oxide dispersion-strengthened 316L steel: a study on ▫$Y_2O_3$▫ reinforcement and corrosion behaviour This study explores the mechanical and corrosion properties of yttria-reinforced 316L stainless steel. Powder precursor materials were prepared using mechanical alloying. Varying yttria (Y2O3) contents (1, 3, and 5 wt%) were used to assess its impact on the steel’s properties. X-ray diffraction and scanning electron microscopy confirmed the successful dispersion of Y2O3 within the matrix, with the formation of chromium carbides during spark plasma sintering (SPS). The mechanical properties, including hardness and compressive yield strength, improved with increasing Y2O3 contents, with the highest strength observed in the 316L-5Y2O3 sample. However, corrosion resistance decreased with higher yttria concentrations. The 3 wt% Y2O3 sample exhibited the highest corrosion rate due to localized corrosion in areas enriched with oxide particles and chromium carbides. Electrochemical testing revealed that carbide formation and Cr-depleted regions from SPS processing contributed to the corrosion behaviour. These findings suggest that while yttria reinforcement enhances mechanical strength, optimizing the Y2O3 content and processing methods is crucial to balance both mechanical and corrosion performance in ODS 316L stainless steel. mechanical milling SPS 316L austenitic stainless steel yttria ODS steel corrosion EPR-SL true false true MDPI Švica Angleški jezik Ni določen © 2025 by the authors Neznano 2025-01-31 11:32:59 2025-01-31 11:33:00 2025-02-01 03:40:26 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 31. 1. 2025; str. 1-15 iss. 3, [article no.] 641 Vol. 18 Feb. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-02-01 620.1:669.14 1996-1944 10.3390/ma18030641 224698371 RAZ_Pokorny_Jan_2025.pdf RAZ_Pokorny_Jan_2025.pdf 1 89561F23A4C878D025E0621EDCC08B2C eef0a51174fe308dfe0c51533fb3ebf29c5903b7791ce3217bc7ac2ce68f8ff6 546af817-dfc0-11ef-ba3f-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=30504 https://www.mdpi.com/1996-1944/18/3/641 1 bf35d1e2-dfbe-11ef-ba3f-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=30503 Inštitut za kovinske materiale in tehnologije 0 0 0