Comparison of the secondary hardness effect after tempering of the hot-work tool steels

• Autorzy: Mazurkiewicz J. , Dobrzański L. A. , Hajduczek E.
• Języki publikacji: EN

Abstrakty

EN

Purpose: of this paper was to examine of the secondary hardness effect after tempering of the developed complex hot-work tool steel 47CrMoWVTiCeZr16-26-8 in relation to standard hot-work tool steel X40CrMoV5-1. Design/methodology/approach: The investigations steels were made using the specimens made from the experimental steel, for which the working 47CrMoW-V-TiCe-Zr16-26-8 denotation was adopted, similar to the ones used in the ISO Standard on using the standard alloy hot-work tool steel X40CrMoV5-1. Both investigated steels were melted in a vacuum electric furnace. Specimens made from the investigated steels were heat treated with austenitizing in salt bath furnaces for 30 minutes in the temperature range of 970-1180 degrees centigrade with gradation of 30 degrees centigrade. Next, the specimens were tempered twice in the temperature range of 450-660 degrees centigrade for 2 hours. Findings: The secondary hardness effect after tempering from temperature of 540 degrees centigrade in the 47CrMoW-V-Ti-CeZr16-26-8 steel and from temperature of 510 degrees centigrade for the X40CrMoV5-1 steel, which is caused by the carbides M4C3 and M7C3 in the 47CrMoWVTiCeZr16-26-8 steel and M7C3 in the X40CrMoV5-1 steel. Practical implications: The developed complex hot-work tool steel 47CrMoWVTiCeZr16-26-8 can be used to the hot work small-size tools which requires higher strength properties at elevated temperature. Originality/value: The obtained results show the influence of the chemical compositions on the secondary hardness effect after tempering in the hot-work tool steel. The secondary hardness effect after tempering determined structure and mechanical properties in this kinds of steels group.

Słowa kluczowe

EN

heat treatment; tool materials; hot-work tool steels; structure of hot work tool steels; secondary hardness effect

PL

obróbka cieplna; materiały narzędziowe; stale narzędziowe do pracy na gorąco; struktura stali narzędziowych do pracy na gorąco; efekt twardości wtórnej

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 24, nr 2
• Strony: 119--122
• Opis fizyczny: Bibliogr. 15 poz., fot., rys., tab.

Twórcy

autor

Mazurkiewicz J.

autor

Dobrzański L. A.

autor

Hajduczek E.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18 a, 44-100 Gliwice, Poland,

Bibliografia

• [1] L.A. Dobrzański, M. Bonek, E. Hajduczek, A. Klimpel, A. Lisiecki, Comparison of the structures of the hot-work tool steels laser modified surface layers, Journal of Materials Processing Technology 164-165 (2005) 1014-1024.
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• [6] L.A. Dobrzański, M. Polok, M. Adamiak, Characterisation of the TiN and TiN/(Ti, AL) N PVD coatings deposited onto plasma nitrided hot work tool steel, Proceedings of International Conference RIVA 5 - 5th Iberian Vacuum Meeting, XI Spanish Vacuum Meeting, Guimaraes, Portugal, 2005, 166-167.
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• [8] L.A. Dobrzański, J.Mazurkiewicz, E. Hajduczek, E. Madejski, Comparison of the thermal fatigue resistance and structure of the 47CrMoWVTiCeZr16-26-8 hot-work tool steel with X40CrMoV5-1 type one, Journal of Materials Processing Technology 113 (2001) 527-538.
• [9] L.A. Dobrzański, J. Mazurkiewicz, E. Hajduczek, Effect of heat treatment on structure and properties experimental hot-work tool steel 47CrMoWVTiCeZrl6-26-8, Materials Science Forum 437-438 (2003) 265-268.
• [10] L.A. Dobrzański, J. Mazurkiewicz, E. Hajduczek, Effect thermal treatment on structure of newly developed 47CrMoWVTiCeZr16-26-8 hot-work tool steel, Journal of Materials Processing Technology 157-158 (2004) 472-484.
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• [12] L.A. Dobrzański, J. Mazurkiewicz, E. Hajduczek, Influence of the Zr and Ce on the structure of experimental hot-work tool steel, Journal of Achivements in Materials and Manufacturing Engineering 17 (2006) 49-52.
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