Analysis of the structure of castings made from chromium white cast iron resistant to abrasive wear

• Autorzy: Kopyciński, D.
• Języki publikacji: EN

Abstrakty

EN

It has been proved that an addition of boron carbide and disintegrated steel scrap introduced as an inoculant to the chromium white cast iron changes the structure of castings. The said operation increases the number of crystallization nuclei for dendrites of the primary austenite. In this case, the iron particles act as substrates for the nucleation of primary austenite due to a similar crystallographic lattice. The more numerous are the dendrites of primary austenite and the structure more refined and the mechanical properties higher. Castings after B4C inoculation revealed a different structure of fine grained fracture. Primary precipitates of chromium carbide also appeared, reducing the mechanical properties of as-cast parts. Properly established heat treatment regime makes chromium iron castings regain their, originally high, mechanical properties.

Słowa kluczowe

PL

modyfikowanie; żeliwo chromowe; węglik czteroboru; węglik chromu

EN

inoculation; chromium cast iron; boron carbide; chromium carbide

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 4
• Strony: 109-112
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Kopyciński, D.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland,

Bibliografia

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• [8] D. Kopyciński, E. Guzik: Effective inoculation of low-sulphur cast iron. Archives of Foundry Engineering 2008, vol. 8, 78-81.