Cryogenic Treatment of Martensitic Steels: Microstructural Fundamentals and Implications for Mechanical Properties and Wear and Corrosion Performance

0583138 - ÚFM 2025 RIV CH eng J - Článek v odborném periodiku
Jurči, P. - Dlouhý, Ivo
Cryogenic Treatment of Martensitic Steels: Microstructural Fundamentals and Implications for Mechanical Properties and Wear and Corrosion Performance.
Materials. Roč. 17, č. 3 (2024), č. článku 548. E-ISSN 1996-1944
Grant CEP: GA MŠMT(CZ) EF16_025/0007304
Institucionální podpora: RVO:68081723
Klíčová slova: 1.2080 tool steel * hot die steel * dry sliding wear * high-speed steel * iron-carbon martensite * chromium cast irons * aisi d2 steel * heat-treatment * retained austenite * vanadis 6 * steels * martensite * retained austenite * cryogenic treatment * carbides * microstructure * mechanical properties * wear performance * corrosion performance
Obor OECD: Materials engineering
Impakt faktor: 3.4, rok: 2022
Způsob publikování: Open access
https://www.mdpi.com/1996-1944/17/3/548

Conventional heat treatment is not capable of converting a sufficient amount of retained austenite into martensite in high-carbon or high-carbon and high-alloyed iron alloys. Cryogenic treatment induces the following alterations in the microstructures: (i) a considerable reduction in the retained austenite amount, (ii) formation of refined martensite coupled with an increased number of lattice defects, such as dislocations and twins, (iii) changes in the precipitation kinetics of nano-sized transient carbides during tempering, and (iv) an increase in the number of small globular carbides. These microstructural alterations are reflected in mechanical property improvements and better dimensional stability. A common consequence of cryogenic treatment is a significant increase in the wear resistance of steels. The current review deals with all of the mentioned microstructural changes as well as the variations in strength, toughness, wear performance, and corrosion resistance for a variety of iron alloys, such as carburising steels, hot work tool steels, bearing and eutectoid steels, and high-carbon and high-alloyed ledeburitic cold work tool steels.
Trvalý link: https://hdl.handle.net/11104/0352698