Anisotropic in Situ Metal Matrix Composite Reinforced with VC Carbide Fibres

• Autorzy: Kawalec M. , Górny M. , Sikora G.

Identyfikatory

DOI

10.1515/afe-2015-0005

• Języki publikacji: EN

Abstrakty

EN

A eutectic reaction is a basic liquid-solid transformation, which can be used in the fabrication of high-strength in situ composites. In this study an attempt was made to ensure directional solidification of Fe-C-V alloy with hypereutectic microstructure. In this alloy, the crystallisation of regular fibrous eutectic and primary carbides with the shape of non-faceted dendrites takes place. According to the data given in technical literature, this type of eutectic is suitable for the fabrication of in-situ composites, owing to the fact that a flat solidification front is formed accompanied by the presence of two phases, where one of the phases can crystallise in the form of elongated fibres. In the present study an attempt was also made to produce directionally solidifying vanadium eutectic using an apparatus with a very high temperature gradient amounting to 380 W/cm at a rate of 3 mm/h. Alloy microstructure was examined in both the initial state and after directional solidification. It was demonstrated that the resulting microstructure is of a non-homogeneous character, and the process of directional solidification leads to an oriented arrangement of both the eutectic fibres and primary carbides.

Słowa kluczowe

EN

cast composite; directional solidification; vanadium eutectic; vanadium carbide; microstructure

PL

kompozyt odlewany; krzepnięcie kierunkowe; węglik wanadu

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2015
• Tom: Vol. 15, iss. 1
• Strony: 21--24
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Kawalec M.

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

autor

Górny M.

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

autor

Sikora G.

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

Bibliografia

• [1] Fraś, E. & Guzik E. (1980). Primary microstructure of the Fe-C-V alloys. Archives of Metallurgy. 25(4), 757-772.
• [2] Fraś, E., Guzik, E., Kapturkiewicz, W. & Lopez, H. F. (1997). Carbide morphology in bulk and undirectionally solidified Fe-C-V eutectics. Materials Science and Technology. 13, 989-996.
• [3] Kawalec, M. (2014). Microstructure control of high-alloyed white cast iron. Archives of Foundry Engineering. 14, 49-54.
• [4] Kawalec, M. & Fraś, E. (2008). Structure, Mechanical Properties and Wear Resistance of High-vanadium Cast Iron. ISIJ International. 48(4), 518-524.
• [5] Fraś, E. (2003). Crystallization of metals. Warsaw: WNT.
• [6] Fraś, E., Kawalec, M. & Lopez, H.F. (2009). Solidification microstructures and mechanical properties of high-vanadium Fe-C-V and Fe-C-V-Si alloys. Materials Science and Engineering A. 524, 193-203.