Heat treatment of squeezed AlZnMg alloy

• Autorzy: Zyska A. , Konopka Z. , Łągiewka M. , Nadolski M.
• Języki publikacji: EN

Abstrakty

EN

The examination results concerning strength properties of squeezed and heat treated castings produced of AlZn5Mg alloy have been presented. Experiments have been held for slab castings squeezed under the pressure ranging from atmospheric one to 90 MPa, subsequently heat treated according to the two options: ageing in the temperature of 170°C for 16 h or ageing in the temperature of 120°C for 24 h. The performed examinations have allowed for proving that the better hardening is achieved when the second ageing option is applied, and the optimum properties (R_m exceeding 360 MPa, A₅ ≈ 10%) are obtained by heat treatment of the castings squeezed at 30 MPa pressure. Squeezing process changes the α phase solidification morphology and the degree of its refining. A change of structure from the grain one to the cellular-dendritic one occurs. Grain structure comes to existence again after supersaturation and ageing treatment of squeezed castings, but the grain density is significantly greater than for gravity castings.

Słowa kluczowe

EN

alloys Al; squeeze casting; supersaturation; mechanical properties; structure

PL

stopy Al; prasowanie stopu; przesycenie; właściwości mechaniczne; struktura

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 3s
• Strony: 123--126
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Zyska A.

• Technical University of Częstochowa, Department of Foundry, ul. Armii Krajowej 19, 42-200 Częstochowa, Polska

autor

Konopka Z.

• Technical University of Częstochowa, Department of Foundry, ul. Armii Krajowej 19, 42-200 Częstochowa, Polska

autor

Łągiewka M.

• Technical University of Częstochowa, Department of Foundry, ul. Armii Krajowej 19, 42-200 Częstochowa, Polska

autor

Nadolski M.

• Technical University of Częstochowa, Department of Foundry, ul. Armii Krajowej 19, 42-200 Częstochowa, Polska

Bibliografia

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