Influence of the Zr and Ce on the structure of experimental hot-work tool steel

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

Abstrakty

EN

Purpose: of this paper was to examine of the influence of the Zr i Ce on the structure of the newly 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 47CrMoWVTiCeZr16-26-8 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°C with gradation of 30°C. Next, the specimens were tempered twice in the temperature range of 450-660°C for 2 hours. Findings: The 47CrMoWVTiCeZr16-26-8 steel quenched from the temperature of 1120°C has the martensitic structure with the small portion of the retained austenite and alloy carbides partially dissolved during austenitizing (about 3.5%), including the MC type carbides (based on ZrC, TiC, (Ti,V)C and VC, with differing chemical compositions and crystallographic lattice parameter) and of the M2C3 type (based on Ce2C3). Research limitations/implications: Basing on the investigations of the newly developed 47CrMoWVTiCeZr16-26-8 steel and the standard X40CrMoV5-1 steel, the most advantageous heat treatment conditions were determined to obtain thesis most advantageous structure and mechanical properties: for the 47CrMoWVTiCeZr16-26-8 steel quenching at the temperature of 1120°C and tempering at the temperature of 540°C, and for the X40CrMoV5-1 one quenching at the temperature of 1060°C and tempering at the temperature of 510°C. Originality/value: The newly developed hot-work tool steel include Zr and Ce characterizations good structure and can be used to hot work small-size tools which requires higher strength properties at elevated temperature.

Słowa kluczowe

EN

tool materials; structure; secondary hardness effect; thermal fatigue

PL

materiały narzędziowe; konstrukcja; efekt twardości wtórnej; zmęczenie cieplne

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 17, nr 1-2
• Strony: 49--52
• Opis fizyczny: Bibliogr. 5 poz., tab., wykr.

Twórcy

autor

Dobrzański L. A.

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

autor

Mazurkiewicz J.

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

autor

Hajduczek E.

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

Bibliografia

• [1] L.A. Dobrzański, J. Mazurkiewicz, E. Hajduczek and 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.
• [2] L.A. Dobrzański, J. Mazurkiewicz, E. Hajduczek, Effect of heat treatment on structure and properties experimental hotwork tool steel 47CrMoWVTiCeZr16-26-8, Materials Science Forum, v. 437-438 (2003), 265-268.
• [3] L.A. Dobrzański, J. Mazurkiewicz, E. Hajduczek, “Effect of thermal treatment on structure of newly developed 47CrMoWVTiCeZr16-26-8 hot-work tool steel”, Journal of Materials Processing Technology , 157-158 (2004), 472-484.
• [4] L.A. Dobrzański, J. Mazurkiewicz, E. Hajduczek, Bonek M., Characteristics of the 47CrMoWVTiCeZr16-26-8 hot-work tool steel, Proceedings of the 11th Scientific International Conference „Achievements in Mechanical and Materials Engineering” AMME’2003, Gliwice-Zakopane, 2002, 125-130.
• [5] ISO 4957:1999 Tool steels