CRYOGENIC TREATMENT OF CR-V DIE STEEL IN LIQUID HELIUM – EFFECT ON MECHANICAL PROPERTIES

1 JURČI Peter
Co-authors:
1 PTAČINOVÁ Jana 2 DLOUHÝ Ivo
Institutions:
1 Faculty of Materials Sciences and Technology in Trnava, Bottova 25, 917 24 Trnava, Slovakia, p.jurci@seznam.cz
2 Institute of Physics of Materials, CEITEC-IPM, Czech Academy of Sciences, Zizkova 22, 61662 Brno, Czech Republic, EU, idlouhy@ipm.cz
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
562-568
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
49 views / 15 downloads
Abstract

The microstructure and mechanical properties of Vanadis 6 ledeburitic tool steel, which was subjected to sub-zero treatment in liquid helium, has been examined with reference of the same material after conventional room temperature quenching. It has been found that the sub-zero treatment considerably reduces the amount of retained austenite, and increases the number and population density of carbides. As a result of SZT, the hardness, the flexural strength and the fracture toughness of the material are improved, except minor cases.

Keywords: Vanadis 6 steel, sub-zero treatment, liquid helium, microstructure, mechanical properties
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