Szczegóły publikacji
Opis bibliograficzny
The kinetics of phase transformations during the tempering of $HS6-5-2$ steel / P. BAŁA, J. PACYNA, J. KRAWCZYK // Archives of Materials Science and Engineering ; ISSN 1897-2764. — Tytuł poprz.: Archives of Materials Science. — 2009 — vol. 35 iss. 2, s. 69–76. — Bibliogr. s. 75–76, Abstr. — Publikacja dostępna online od: 2009-02-01
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 46101 |
|---|---|
| Data dodania do BaDAP | 2009-08-03 |
| Rok publikacji | 2009 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Archives of Materials Science and Engineering |
Abstract
Purpose: This work contains a detailed description of the kinetics of phase transformations during tempering of hardened HS6-5-2 high-speed steel. Moreover, the microstructure development in tested samples, reflecting the extend of the phase transformations during tempering, was discussed too. Design/methodology/approach: CHT diagram, illustrating the kinetics of phase transformations during continuous heating (tempering) from as-quenched state of investigated steel, was elaborated using a DT 1000 dilatometer of a French company Adamel. The influence of the heating rate on the retained austenite transformation as well as the results of threefold tempering at 560 °C were also determined. Findings: Heating of the investigated steel from the as-quenched state resulted in the occurrence of 4 primary transformations: precipitation of ε carbide, M₃C precipitation, transformation of retained austenite and precipitation of alloy carbides of MC and M₂C type. It was shown that in the quenched high-speed steels a part of retained austenite is already transformed during heating for tempering, but its significant part is transformed only during cooling after tempering as well as during consecutive heatings for temperings. Examination of the microstructure of investigated steel, mainly focused on microstructural development relating to the advancement of transformations during continuous tempering, showed an adequacy of the microstructural changes to CHT diagrams. Research limitations/implications: The new CHT diagram of investigated steel was determined. Practical implications: The obtained CHT diagram may be used to design new technologies of tempering of this steel. Originality/value: The new CHT diagram.
