Effect of carbon concentration on structure and properties of the gradient tool materials

• Autorzy: Dobrzański L. A. , Kloc A. , Matula G. , Domagała J. , Torralba J. M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The goal of this project is development of the contemporary gradient materials using the powder metallurgy methods to ensure the required properties and structure of the designed material. Design/methodology/approach: The materials were fabricated with the conventional powder metallurgy method consisting in compacting the powder in the closed die and finally sintering it. Forming methods were developed for the HS6-5-2 high-speed steel and non-alloy steel powders, making it possible to obtain materials with three layers, and later - after their further modification - with six layers in their structure. Findings: It was found out basing on the microhardness tests that hardness of test pieces grows along with the sintering temperature and with carbon content in the interface and non-alloy layers. It was also observed that porosity decreases along with the carbon content in these layers. It was found out, basing on the comparison of structures and properties of the compacted and sintered test pieces, that in structures of all examined test pieces in the sintered state fine carbides occurred distributed homogeneously in the high-speed steel layer. Research limitations/implications: It was noticed, that increase of the sintering temperature results in the uncontrolled growth and coagulation of the primary carbides and melting up to forming of eutectics in layers consisting of the high-speed steel. Practical implications: Material presented in this paper has layers consisting on one side from the non-alloy steel with hardness growing with the increase of carbon content, and on the other side the high-speed steel, characteristic of the high ductility. Such material is tested for turning tools. Originality/value: The layers were poured in such way that the first layers consisted of the non-alloy steel and the last one from the high-speed steel, and were compacted next. The layers inside the material are mixes of the high-speed steel and non-alloy steel powders in the relevant proportions.

Słowa kluczowe

EN

tool materials; powder metallurgy; high-speed steel; sintering

PL

materiały narzędziowe; metalurgia proszków; stal szybkotnąca; spiekanie

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 17, nr 1-2
• Strony: 45--48
• Opis fizyczny: Bibliogr. 16 poz., rys., 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

Kloc 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

Matula G.

• 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

Domagała 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

Torralba J. M.

• Universidad Carlos III de Madrid, Avda. Universidad, 30.E-28911 Leganés, Spain

Bibliografia

• [1] L.A. Dobrzański, E. Hajduczek, J. Marciniak and R. Nowosielski, Physical metallurgy and heat treatment of tool materials, WNT, Warsaw, 1990, (in Polish).
• [2] L.A. Dobrzański, A. Kloc, G. Matula, J.M. Contreras, J.M. Torralba: The impact of production methods on the structure and properties of gradient tool materials of unalloyed steel matrix reinforced with HS6-5-2 high-speed steel, CAM3S’2005, Gliwice-Zakopane, 2005 (in print).
• [3] L.A. Dobrzański., G. Matula, G. Herranz, A. Várez, B. Levenfeld, J.M. Torralba: „Injection Moulding of HS12-1-5-5 high-speed using a PW-HDPE based binder”, 12th Scientific International Conference “Achievements in Mechanical and Materials Engineering” AMME’2003, Gliwice-Zakopane, 2003, 237-240.
• [4] L.A. Dobrzański, G. Matula, A. Várez, B. Levenfeld, J.M. Torralba: „Structure and Properties of the Heat_treated HighSpeed Steel HS6-5-2 and HS12-1-5-5 Produced by Injection Molding Process”, Materials Science Forum, vol 437-438, 2003, 133-136.
• [5] L.A. Dobrzański, G. Matula, A. Várez, B. Levenfeld, J.M. Torralba: „Structure and mechanical properties of HSS HS6-5-2 and HS12-1-5-5 type steel produced by Power Injection Moulding process”, Journal of Materials Processing Technology, 2004.
• [6] L.A. Dobrzański, G. Matula, B. Levenfeld, A. Várez, J.M. Torralba: „Influence of heat-treatment on structure and properties of the HS6-5-2 and HS12-1-5-5 high-speed steels produced by PIM process”, 7th International Research/Expert Conference “Trends in the Development of Machinery and Associated Technology” TMT’2003, Lloret de Mar, Barcelona, Spain, 2003, s. 185-188
• [7] L.A. Dobrzański, G. Matula, A. Várez, B. Levenfeld, J.M. Torralba: Structures and chemical compositions of primary carbides in HS6-5-2 and HS12-1-5-5- high speed steels manufactured with PIM method. 10th International Conference on Composities/Nano Enfineering (ICEE), New Orleans, 2003
• [8] L.A. Dobrzański, G. Matula,. A. Várez, B. Levenfeld, J.M. Torralba: „Structure and mechanical properties of HSS HS6-5-2 and HS12-1-5-5 type steel produced by Power Injection Moulding process”, Journal of Materials Processing Technology, 2004.
• [9] E.C. Lee, C.Y. Nian, Y.S. Tarng, Design of a dynamic vibration absorber against vibrations in turning operations, Journal of Materials Processing Technology 108 (2001) 278–285.
• [10] N. Khattab, J.M. Torralba, E. Gordo, V. Trabadelo, I. Iturriza, Development of HCxO stainless steel - based materials for its application as valve seat inserts in diesel engines, Proc. of EuroPM2003, Valencia, Spain, 2003, 225-231.
• [11] G. Matula, L.A. Dobrzański, A. Várez, B. Levenfeld, J.M. Torralba: “Sintering under different atmosphere of T15 and M2 HSS produced by a modified MIM process”, Technologies AMPT01”, Leganes-Madrid, Spain, 2001, 758-761.
• [12] L.A. Dobrzański, J. Mikuła, D. Pakuła, J. Kopač, M. Sokovič, Cutting properties of the ceramic tool materials based on Si3N4 and Al2O3 coated with PVD and CVD process, Proceedings of the 12th Scientific International Conference „Achievements in Mechanical and Materials Engineering” AMME’2003, Gliwice-Zakopane, 2003, 249-252.
• [13] W.M. Smith, Surface Materials Processing. Second Edition, Backmann Verlag, Berlin-London-Paris-Warsaw, 2001.
• [14] Varez A., Levenfeld B., Torralba J.M., Matula G., Dobrzański L.A.: “Sintered in different atmospheres of T15 and M2 high speed steels produced by modified metal injection moulding process”, Materials Science and Engineering, 2004
• [15] A. Varez, B. Levenfeld, J.M. Torralba, G. Matula, L.A. Dobrzański: “Sintered in different atmospheres of T15 and M2 high speed steels produced by modified metal injection moulding process”, Materials Science and Engineering, 2004.
• [16] X.L. Wu, In situ formation by laser cladding of a TiC composite coating with a gradient distribution, Surface and Coatings Technology 115 (1999) 111–115.