Formation of magnesium-eutectic mixture layered composite

• Autorzy: Mola R. , Dziadoń A.
• Języki publikacji: EN

Abstrakty

EN

The work was started from study of the structural transformations, that in elevated temperatures, take place at the magnesium-aluminium interface. It was found experimentally that at temperature of 445°C solid state diffusion is followed by liquid phase appearance at the Mg-Al interface. For process passing with the liquid phase contribution thickness d of the reactions products against the time t can be expressed by the equation d=Atn with the time exponent value n>1. This process is very fast compared to solid state polyphase diffusion and can be controlled, therefore may be used for fabrication of layered composite. To obtain a composite, magnesium and aluminium sheets are formed alternately into a pocket and then heated at temperature of 445°C. Heating is prolonged for passing all the aluminium with part of the magnesium sheets into a liquid phase. During solidification liquid phase is transformed into eutectic mixture. So, composite that was formed consists of alternating magnesium and eutectic mixture layers. Using X-ray microprobe analysis and on the basis of Mg-Al binary phase diagram we were found that the eutectic mixture contains two phases: Mg17Al12 intermetallic compound and solid solution of aluminium in magnesium.

Słowa kluczowe

EN

composite; intermetallic phases; magnesium

PL

kompozyt; fazy międzymetaliczne; magnez

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 4
• Strony: 127--132
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Mola R.

autor

Dziadoń A.

• Kielce University of Technology, al. 1000-lecia P.P. 7, 25-314 Kielce, Poland,

Bibliografia

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