Effect of silicon on the structure and mechanical properties of high-vanadium cast iron

• Autorzy: Fraś E. , Kawalec M.
• Języki publikacji: EN

Abstrakty

EN

The results of microstructural examinations and mechanical tests carried out on Fe-C-V and Fe-C-V-Si alloys solidifying in volumetric mode, containing 1,38--1,83%C, 6,76-14,72%V and 1,05-3,69 Si, have been reported. The eutectic crystallising in Fe-C-V alloys is composed of ferrite and vanadium carbides of the VC1-x type, and as such is included in the group of fibrous eutectics. Introducing silicon additions to the Fe-C-V system changes the geometry of the solidifying eutectic from fibrous to complex regular, and the shape of primary carbides from non-faceted dendrites to the faceted ones. It has been proved that the tensile strength Rm, proof stress R0,2, unit elongation A5 and hardness HV30 depend mainly on the type of alloy matrix. It has also been proved that adding silicon to Fe-C-V alloys may increase the hardness HV30 by about 24% and the tensile strength Rm by as much as 40%, with simultaneous 80% reduction of the unit elongation A5.

Słowa kluczowe

EN

mechanical properties; Fe-C-V alloy; eutectic alloy; eutectic; cast iron

PL

właściwości mechaniczne; stop eutektyczny; żeliwo

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 3
• Strony: 231--234
• Opis fizyczny: Bibliogr. 5 poz., rys., tab., wykr.

Twórcy

autor

Fraś E.

autor

Kawalec M.

• University of Science and Technology, Reymonta 23, 30-059 Kraków, Poland,

Bibliografia

• [1] E. Fraś, E. Guzik, Primary microstructure of the Fe-C-V alloys, Archiwum Hutnictwa , vol. 25, No. 4 (1980) 757-772 (in Polish).
• [2] E. Fraś, Crystallization of metals,. WNT, Warsaw, 2003 (in Polish).
• [3] M. Kawalec, E. Fraś, Structure, Mechanical Properties and Wear Resistance of Highvanadium Cast Iron, ISIJ International, vol. 48, No. 4 (2008) 518-524.
• [4] E. Fraś, M. Kawalec, Structure, mechanical properties and abrasion wear resistance of Fe-C-V alloys, Inżynieria Materiałowa, vol. 29, No 2 (2008) 78-85 (in Polish).
• [5] M. Kawalec, E. Fraś, Silicium influence on the formation of high vanadium cast iron structure, Archiwum Odlewnictwa, Rocznik 6 (2006), No. 21 (1/2) 389-394 (in Polish).