The cavitational erosion resistance of the B2-type Fe-Al casting alloys

• Autorzy: Jasionowski, R. , Przetakiewicz, W. , Zasada, D.
• Języki publikacji: EN

Abstrakty

EN

The problem of the destruction of turbo-machinery components is very complex, because it consists of processes of erosion and corrosion. The most dangerous factor is the cavitation phenomenon, which is very difficult to eliminate through the use of design solutions. It causes deterioration of the operating characteristics of machinery and equipment, such as water turbines, steam turbines, centrifugal pumps, screw vessels, cylinder liners with water-cooled engines, acoustic probe. The most commonly used method of limiting the destruction of cavitation phenomenon is the optimum choice of parameters of geometric and hydraulic machines, the appropriate design of elements and streamlined flow and providing working conditions of flow devices. The above-mentioned methods by design, the size of flow devices are limited, so better action to prevent the flow of erosion may use the material for greater resistance to erosion and cavitation corrosion is the alloy of intermetallic FeAl phase, which production costs are low compared to cast steel and cast iron alloy based on chromium and nickel. The paper presents results of an investigation carried out for cavitational resistance of the B2-type Fe-Al casting alloys using a flux-impact measuring device. The intermetallic FeAl alloys proved to have good resistance to this type of erosion in comparison to other construction materials, investigated by flux-impact device.

Słowa kluczowe

PL

erozja kawitacyjna; stop FeAl; stop intermetaliczny

EN

cavitation erosion; FeAl alloy; intermetallic alloy

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 1 spec.
• Strony: 305--310
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Jasionowski, R.

• Institute of Basic Technical Sciences, Maritime University of Szczecin, Szczecin, Poland,

autor

Przetakiewicz, W.

• Institute of Basic Technical Sciences, Maritime University of Szczecin, Szczecin, Poland

autor

Zasada, D.

• Department of Metallurgy and Material Technology, Military University of Technology, Warszawa, Poland

Bibliografia

• [1] C.E. Brennen, Cavitation and Buble Dynamics, Oxford University Press, 1995.
• [2] L.J. Briggs, The Limiting Negative Pressure of Water, Journal of Applied Physics, Vol. 21 (1970) 721-722.
• [3] D.H. Trevena, Cavitation and tension in liquids, IOP Publishing Ltd, 1987.
• [4] M.S. Plesset, R.B. Chapman: Collapse of an Initially Spherical Vapour Cavity in the Neighbourhood of a Solid Boundary, Jour. Fluid Mech., Vol. 47, Part 2 (1971), 283-290.
• [5] R. Hickling, M.S. Plesset: Collapse and rebound of a spherical bubble in water, Phys. Fluids, No 7 (1963), 7-14.
• [6] C.F. Naude, A.T. Ellis: On the mechanism of cavitation damage by non-hemispherical cavities collapsing in contact with a solid boundary, Journal of Basic Engineering, No. 83 (1961), 648-656.
• [7] A. Karimi, J.L. Martin, Cavitation erosion of materials, International Metals Reviews, Vol. 31, No. 1 (1986), 1-26.
• [8] J. Steller, International Cavitation Erosion Test and quantitative assessment of material resistance to cavitation, Wear, Vol. 233-235, p. 51-64.