Fabrication of in situ composite layer on cast steel

• Autorzy: Fraś, E. , Olejnik, E. , Janas, A. , Kolbus, A.
• Języki publikacji: EN

Abstrakty

EN

The study describes the technology of fabrication of composite layers in cast steel reinforced with titanium carbides. In the process under discussion, the reinforcing TiC phase is formed in situ from the substrates deposited on mould cavity, where the said substrates under the effect of heat supplied by molten metal poured into mould (1823K) undergo a synthesis in the SHS reaction. An outcome of this process is the formation, within the casting surface, of a layer from 550 to 1200μm thick. Carbides produced in this synthesis have the size from 0,5 to 20μm and a non-typical spheroidal shape. The hardness of the produced layer examined in function of the distance from the casting surface is from 700 to 1134 HV, and is determined by volume fraction of the reinforcing TiC phase. To better document the type of microstructure obtained in the produced material, metallographic and structural examinations were carried out using the method of scanning electron microscopy (SEM), X-ray microanalysis (EDS/EDX), and phase analysis (XRD). To check the mechanical properties of the examined material, hardness was measured by the Vickers test.

Słowa kluczowe

PL

kompozyt warstwowy; kompozyt in situ; warstwa wierzchnia; węgliki TiC

EN

composite layer; composite in situ; SHS process; superficial layer; cast steel; carbides of TiC

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 1 spec.
• Strony: 175--180
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Fraś, E.

• Department of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH-University of Science and Technology, 23 Reymonta, 30-059 Cracow, Poland,

autor

Olejnik, E.

• Department of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH-University of Science and Technology, 23 Reymonta, 30-059 Cracow, Poland

autor

Janas, A.

• Department of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH-University of Science and Technology, 23 Reymonta, 30-059 Cracow, Poland

autor

Kolbus, A.

• Department of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH-University of Science and Technology, 23 Reymonta, 30-059 Cracow, Poland

Bibliografia

• [1] B. Kieback, A. Neubrand, H. Riedel, Processing Techniques for Functionally Graded Materials, Materials Science and Engineering A, 362A (2003) 81-105.
• [2] A. Kawasami, R. Watanable, Concept and P/M Fabrication of Functionally Gradient Materiale, Ceramics International, 23 (1997) 73-83.
• [3] B. Major, W. Mróz, T. Wierzchoń, W. Waldhauser, J. Lackner, R. Ebner, Surface and Coatings Technology, 180-181 (2004) 580-584.
• [4] K.A. Khor, Y.W. Gu, Z.L. Dong, Plasma Spraying of Functionally Graded Yttria Stabilized Zirconia/NiCoCrAlY Coating System Using Composite Powders, Journal of Thermal Spray Technology, 9 (2000) 245-249.
• [5] J. Zhang, Y.Q. Wang, B.L. Zhou, X.Q. Wu, Journal Materials Society Letter, 17 (1998) 1677-1679.
• [6] G. Zimmermann, A. Schievenbusch, in W.A. Kaysser (Ed), Functionally Graded Materials 1998, Proceedings of the 5th. International Symposium on FGM 1998, Trans Tech Publications, Switzerland, 1999 533-538.
• [7] E. Fraś, A. Janas, A. Kolbus, E. Olejnik, Matrix-particle Interphase boundaries of the selected in situ and ex situ Composites MMCs ,Archives of Foundry, 6 (18) 2006, 297-304 (in Polish).
• [8] E. Fraś, A. Janas, A. Kolbus, E. Olejnik, Cast Ni3Al/MeC (Me-W,Zr) Composites In Situ, Archives of Foundry, 6 (18) (2006), 317-324 (in Polish).