carbides. chromium alloys. fractography. indentation fracture toughness. hardnessJurči, Peter, 1968- Relationships between the microstructure, hardness and fracture toughness of differently sub-zero treated tool steel / aut. Peter Jurči, Ivo Dlouhý, J Horník, Petra Priknerová, Zdeněk Mrštný. -- 10.4028/www.scientific.net/DDF.395.95. -- 2-s2.0-85072074371. Dlouhý, Ivo. Horník, J.. Priknerová, Petra. Mrštný, Zdeněk In: Vacuum Heat Treatment and Heat Treatment of Tools. -- 1. vyd.. -- ISSN 1012-0386 Vacuum Heat Treatment and Heat Treatment of Tools. -- Trans Tech Publications, 2019. -- Defect and Diffusion Forum. -- S. 95-112.