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Effect of Cryogenic Treatments on Hardness, Fracture Toughness, and Wear Properties of Vanadis 6 Tool Steel
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SYSNO ASEP 0585386 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of Cryogenic Treatments on Hardness, Fracture Toughness, and Wear Properties of Vanadis 6 Tool Steel Author(s) Yarasu, V. (SK)
Jurči, P. (SK)
Ptačinová, J. (SK)
Dlouhý, Ivo (UFM-A) RID, ORCID
Horník, J. (CZ)Number of authors 5 Article number 1688 Source Title Materials. - : MDPI
Roč. 17, č. 7 (2024)Number of pages 21 s. Language eng - English Country CH - Switzerland Keywords dry sliding wear ; tribological behavior ; resistance ; microstructure ; enhancement ; time ; cryogenic treatment ; cold-work tool steel ; hardness ; fracture toughness ; tribological properties ; wear mechanisms Subject RIV JG - Metallurgy OECD category Materials engineering Method of publishing Open access Institutional support UFM-A - RVO:68081723 UT WOS 001200964800001 EID SCOPUS 85190375635 DOI 10.3390/ma17071688 Annotation The ability of cryogenic treatment to improve tool steel performance is well established, however, the selection of optimal heat treatment is pivotal for cost reduction and extended tool life. This investigation delves into the influence of distinct cryogenic and tempering treatments on the hardness, fracture toughness, and tribological properties of Vanadis 6 tool steel. Emphasis was given to comprehending wear mechanisms, wear mode identification, volume loss estimation, and detailed characterization of worn surfaces through scanning electron microscopy coupled with energy dispersive spectroscopy and confocal microscopy. The findings reveal an 8-9% increase and a 3% decrease in hardness with cryogenic treatment compared to conventional treatment when tempered at 170 degrees C and 530 degrees C, respectively. Cryotreated specimens exhibit an average of 15% improved fracture toughness after tempering at 530 degrees C compared to conventional treatment. Notably, cryogenic treatment at140 degrees C emerges as the optimum temperature for enhanced wear performance in both low- and high-temperature tempering scenarios. The identified wear mechanisms range from tribo-oxidative at lower contacting conditions to severe delaminative wear at intense contacting conditions. These results align with microstructural features, emphasizing the optimal combination of reduced retained austenite and the highest carbide population density observed in140 degrees C cryogenically treated steel. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2025 Electronic address https://www.mdpi.com/1996-1944/17/7/1688
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