Alloyed white cast iron with precipitates of spheroidal vanadium carbides VC

• Autorzy: Kawalec M. , Górny M.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of tests on the spheroidising treatment of vanadium carbides VC done with magnesium master alloy and mischmetal. It has been proved that the introduction of magnesium master alloy to an Fe-C-V system of eutectic composition made 34% of carbides crystallise in the form of spheroids. Adding mischmetal to the base alloy melt caused 28% of the vanadium carbides crystallise as dendrites. In base alloy without the microstructure-modifying additives, vanadium carbides crystallised in the form of a branched fibrous eutectic skeleton. Testing of mechanical properties has proved that the spheroidising treatment of VC carbides in high-vanadium cast iron increases the tensile strength by about 60% and elongation 14 - 21 times, depending on the type of the spheroidising agent used. Tribological studies have shown that high-vanadium cast iron with eutectic, dendritic and spheroidal carbides has the abrasive wear resistance more than twice as high as the abrasion-resistant cast steel.

Słowa kluczowe

EN

abrasive wear resistance; high-vanadium cast iron; eutectic alloy; spheroidisation; vanadium carbide

PL

odporność na zużycie ścierne; żeliwo wysokowanadowe; stop eutektyczny; sferoidyzacja; węglik wanadu

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2012
• Tom: Vol. 12, iss. 4
• Strony: 95--100
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Kawalec M.

autor

Górny M.

• AGH University of Science and Technology in Cracow, ul. Reymonta 23, 30-059 Cracow, Poland,

Bibliografia

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