The kinetics of phase transformations during tempering of low alloy medium carbon steel

• Autorzy: Bała P. , Pacyna J. , Krawczyk J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This work contains a detailed description of the kinetics of phase transformations during tempering of hardened low alloy medium carbon steel. Moreover, the differences in hardness and microstructure of samples of the investigated steel in relationship to the heat treatment were evaluated. 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. Samples were observed using light microscope and TEM. Findings: Heating of the investigated steel from the as-quenched state resulted in the occurrence of 3 primary transformations: precipitation of ε carbide, M3C precipitation and transformation of retained austenite. A light microscope and TEM investigations focused on determination of a degree of phase transformations during continuous tempering, showed compatibility of the microstructure with CHT diagram for tested steel. 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, characterization of tempering new low alloy medium carbon steel.

Słowa kluczowe

EN

tool materials; tempering; CHT diagram; retained austenite

PL

materiały narzędziowe; odpuszczanie; austenit szczątkowy

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2007
• Tom: Vol. 28, nr 2
• Strony: 98--104
• Opis fizyczny: Bibliogr. 17 poz., il., wykr.

Twórcy

autor

Bała P.

autor

Pacyna J.

autor

Krawczyk J.

• Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland,

Bibliografia

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