Crystallisation and microstructure of low-silicon silumins with alloy additions

• Autorzy: Pietrowski S.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of the analysis of crystallisation and microstructure of non-alloy silumins that contain: 2,0-6,0% of Si and alloy additions, approximately: 4,0% Ni, 4,0% of Cu and 0,5% of Mg, the knowledge of which is still very little. It has been proven that in non-alloy silumins, the increase of silicone concentration causes extending of crystallisation time of the eutectic mixture [...] and refinement of \alfa phase dendrites. It also causes the increase of the temperature of crystallisation of the eutectic mixture [...]. Alloy additions: Ni, Cu and Mg decrease by approximately 30 C the liquidus and solidus temperatures of silumins and extend the time of their crystallisation by around 100 sec. in comparison with non-alloy silumins. It is caused by crystallisation of additional phases Al3NiCu, Mg2Si and Al2Cu. Nickel, copper and magnesium refine the microstructure of castings.

Słowa kluczowe

EN

Silumins 2,0-6,0% Si; alloy additions: Ni, Cu, Mg, TDA; liquidus; solidus; eutectic mixtures; microstructure

PL

silumin; dodatki stopowe; mieszanka eutektyczna; mikrostruktura

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 3
• Strony: 113--124
• Opis fizyczny: Bibliogr. 3 poz., rys., tab., wykr.

Twórcy

autor

Pietrowski S.

• Department of Materials Engineering and Production Systems, Technical University of Łódź, Stefanowskiego 1/15 Street, 90-924 Łódź, Poland,

Bibliografia

• [1] S. Pietrowski: Siluminy, Wydawnictwo Politechniki Łódzkiej, 2001.
• [2] L. A. Dobrzański: Podstawy nauki o materiałach i metaloznawstwo, WNT, Warszawa, 2002.
• [3] S. Pietrowski: New High Quality Materials for Machinery and Foundry Devices, Archives of Metallurgy and Materials, 2010, Vol. 55, Is. 3, 2010, 905-914.