The kinetics of phase transformations during tempering of Cr-Mo-V medium carbon steel.

• Autorzy: Bała P. , Pacyna J. , Krawczyk J.
• Konferencja: 12th International Scientific Conference CAM3S'2006, 27-30th November 2006, Gliwice-Zakopane
• Języki publikacji: EN

Abstrakty

EN

Purpose: The reasons for writing this paper was to describe the kinetics of phase transformations during tempering of hardened Cr-Mo-V 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 was determined with dilatometric method. Samples were observed using with TEM. Findings: During heating of the samples of the quenched Cr-Mo-V medium carbon steel the occurrence of 3 principal transformations was determined. These are: precipitation of epsilon carbide, M3C precipitation and transformation of retained austenite. A 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 Cr-Mo-V steel.

Słowa kluczowe

EN

tool materials; tempering; CHT diagram; retained austenite

PL

materiały narzędziowe; odpuszczanie; wykres CTPc; wykresy CTP; austenit szczątkowy

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 20, nr 1-2
• Strony: 79--82
• Opis fizyczny: Bibliogr. 15 poz. , fot., rys.

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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• [8] P. Bała, J. Pacyna, J. Krawczyk, The kinetics of phase transformations during the tempering of HS 18-0-1 high-speed steel. Proc. of the Contemporary Achievements in Mechanics, Manufacturing and Materials Science. Gliwice-Zakopane 6th-9th December 2005, 20-29.
• [9] P. Bała, J. Pacyna, J. Krawczyk, The kinetics of phase transformations during the tempering of HS6-5-2 high-speed steel. Journal of Achievements in Materials and Manufacturing Engineering, vol. 18 (2006) 47-50.
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• [14] P. Bała, J. Pacyna, The kinetics of phase transformations during continuous heating from quenched state of hot-work tool steel 35MnCrMoV8-6-4-l, XXXIII School of Materials Science, Kraków-Ustroń 2005, 33-38 (in Polish).
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