The Effect of Refining and the Cooling Rate on Microstructure and Mechanical Properties of AlSi7Mg Alloy

• Autorzy: Tupaj M. , Orłowicz A. W. , Mróz M. , Trytek A.
• Języki publikacji: EN

Abstrakty

EN

The paper presents results of research on the effect of conventional refining with hexachloroethane and the cooling rate v_cool. ranging within the solidification temperature regime from 12.5°C/min to 94.5°C/min on compactness of the material, values of microstructure parameters λ_2D, λ_E, l_maxSi, and mechanical properties R_m, R_0,2, A₅ of unmodified AlSi7Mg alloy after heat treatment (solution treatment 540°C/6 h/water 20°C and aging 175°C/8 h/air). It has been found that as a result of refining and increased cooling rate, an improvement of material compactness occurred (reduction of the density index by 0.4%) accompanied by a decrease of values of parameters characterizing the microstructure: λ_2D by 54.4 μm; λ_E by 4,6 μm; and l_maxSi by 50 μm. As a result of these changes, the value of R_m increased by about 40 MPa and R_0.2 improved by about 36 MPa, while the value of A₅ decreased by 1.3%.

Słowa kluczowe

EN

AlSi7Mg alloy; material compactness; microstructure parameter; mechanical properties

PL

stop AlSi7Mg; zwięzłość materiału; właściwości mechaniczne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2015
• Tom: Vol. 15, iss. 3 spec.
• Strony: 83--86
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Tupaj M.

• Department of Casting and Welding, Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Orłowicz A. W.

• Department of Casting and Welding, Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Mróz M.

• Department of Casting and Welding, Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Trytek A.

• Department of Casting and Welding, Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

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