IMPROVED PROPERTIES OF STEELS BY SUB-ZERO TREATMENT – CURRENT STATE OF UNDERSTANDING

1 JURČI Peter
Co-authors:
1 PTAČINOVÁ Jana 1 HUDÁKOVÁ Mária 1 DOMÁNKOVÁ Mária
Institution:
1 Faculty of Materials Sciences and Technology in Trnava, Paulínská 16, 917 24 Trnava, Slovakia
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
648-653
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
17 views / 7 downloads
Abstract

Favourable impact of sub-zero treatment on variety of important properties of tools is known over a long period. Alternatively, metallurgical principles responsible for elevated hardness, improved wear performance, changes in the tempering response and toughness, and better dimensional stability are known only over the last few years, and they have never been presented in all their complexity. The topic of the current paper is to make an overview of the most important properties of ledeburitic cold work die steels, their improvements by application of sub-zero treatments, and to explain these improvements upon the basis of the latest elaborated theory explaining the metallurgical background of this kind of treatment.

Keywords: Sub-zero treatment, retained austenite, martensite, carbides, mechanical properties
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