The mechanical properties of AlSi17Cu5 cast alloy after overheating and modification of CuP master alloy

• Autorzy: Piątkowski J. , Jabłońska M.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of studies on the effect of the AlSi17Cu5 alloy overheating to a temperature of 920°C and modification with phosphorus (CuP10) on the resulting mechanical (HB, R_m, R_0.2) and plastic (A₅ and Z) properties. It has been shown that, so-called, "time-thermal treatment" (TTT) of an alloy in the liquid state, consisting in overheating the metal to about 250°C above T_liq., holding at this temperature by 30 minutes improves the mechanical properties. It has also been found that overheating of alloy above T_liq. enhances the process of modification, resulting in the formation of fine-grain structure. The primary silicon crystals uniformly distributed in the eutectic and characteristics of the \alfa(Al) solution supersaturated with alloying elements present in the starting alloy composition (Cu, Fe) provide not only an increase of strength at ambient temperature but also at elevated temperature (250°C).

Słowa kluczowe

EN

hypereutectic Al-Si alloy; overheating; modification; CuP10 master alloy; mechanical properties; plastic properties

PL

stop nadeutektyczny Al-Si; przegrzanie; modyfikacja; zaprawa CuP10; właściwości mechaniczne; właściwości plastyczne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2013
• Tom: Vol. 13, iss. 3
• Strony: 68--71
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Piątkowski J.

• Department of Materials Technology, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland

autor

Jabłońska M.

• Department of Materials Science, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland

Bibliografia

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