Effect of the sintering parameters on structure of the gradient tool materials

• Autorzy: Dobrzański L. A. , Hajduczek J. , Kloc-Ptaszna A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The purpose of this work was to obtain gradient tool materials, based on the unalloyed steel reinforced with HS6-5-2 high-speed steel, through using the conventional powder metallurgy method and sintering in the vacuum furnace at the range of temperature from 1190°C to 1250°C, in steps of 20°C, for 30 and 60 minutes. Design/methodology/approach: In presented work gradient materials were obtained through powder metallurgy consisting uniaxial compacting method and sintering. The unalloyed steel was fabricated by mixing iron and graphite powders. Structural examinations were carried out by optical microscopy methods assisted with the computer image analysis, scanning electron microscopy and X-ray microanalysis. Findings: It was found out, that increase of the sintering temperature contribute to the undergo coagulation on the grain boundary or creation of the large allocations on the grain boundary of the carbides in the matrix. As well, it was proved, that incompleted sintering process was caused by too low sintering temperature. Practical implications: Such gradient material may be applied for turning tools. Originality/value: A forming methods were developed for unalloyed steel and high-speed steel powders, which made it possible to obtain specimens with six layers in its structure. The material presented in this paper has layers, at one side consisting unalloyed steel and at the other side high-speed steel. The layers inside the material are mixes of the high-speed steel and unalloyed steel powders in the relevant proportions.

Słowa kluczowe

EN

powder metallurgy; FGM; SEM; tool material

PL

metalurgia proszków; FGM; SEM; materiał narzędziowy

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2009
• Tom: Vol. 36, nr 1
• Strony: 33--40
• Opis fizyczny: Bibliogr. 15 poz., rys., tabl.

Twórcy

autor

Dobrzański L. A.

autor

Hajduczek J.

autor

Kloc-Ptaszna A.

• Division of Materials Processing Technology, Management 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] Y. Miyamoto, W. A. Kaysser, B. H. Rabin, A. Kawasaki, R. G. Ford, Functionally Graded Materials: Design, Processing and Applications, Kluwer Academic Publishers, Boston-Dordrecht-London, 1999.
• [2] K. Ichikawa, Functionally Graded Materials in the 21st Century: A Workshop on Trends and Forecasts, Kluwer Academic Publishers, Boston, 2001.
• [3] W. Lengauer, K. Dreyer, Functionally Graded Hardmetals, Journal of Alloys and Compounds 338 (2002) 194-212.
• [4] J. Wessel, The Handbook of Advanced Materials: Enabling New Designs, Materials Technology Series, 2004.
• [5] M. B. Bever, P. F. Duwez, Gradients in composite materials, Materials Science and Engineering 10 (1972) 1-8.
• [6] J. Hajduczek, Effect of the sintering parameters on structure and properties of the gradient tool materials with the unalloyed steel matrix, MSc thesis, Silesian University of Technology, Gliwice, 2007 (in Polish).
• [7] S. Suresh, A. Mortensen, Fundamentals of functionally graded materials, JOM Communications Limited, London, 1999.
• [8] E. M. Ruiz-Navas, R. García, E. Gordo, F. J. Velasco, Development and characterisation of high-speed steel matrix composites gradient materials, Journal of Materials Processing Technology 143-144 (2003) 769-775.
• [9] B. Kieback, A. Neubrand, H. Riedel, Processing techniques for functionally graded materials, Materials Science and Engineering 362 (2003) 81-106.
• [10] L. A. Dobrzański, A. Kloc, G. Matula, J. Domagała, J. M. Torralba, Effect of carbon concentration on structure and properties of the gradient tool materials, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 45-48.
• [11] 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.
• [12] L. A. Dobrzański, Effects of chemical composition and processing conditions on the structure and properties of high-speed steels, Journal of Materials Processing Technology 48/1-4 (1995) 727-737.
• [13] L. A. Dobrzański, A. Zarychta, E. Hajduczek, M. Ligarski, Heat treatment of the Mo-V and W-V high-speed steels with addition of Ti, Silesian University of Technology Publishing House, Gliwice, 1997 (in Polish).
• [14] O. Eso, Z. Fang, A. Griffo, Liquid phase sintering of functionally graded WC-Co composites, International Journal of Refractory Metals and Hard Materials 23 (2005) 233-241.
• [15] L. A. Dobrzański, A. Kloc-Ptaszna, G. Matula, J. M. Torralba, Structure of the gradient carbide steels of HS6-5-2 high-speed steel matrix, Archives of Materials Science and Engineering 28/10 (2007) 589-592.