On the mechanical properties and structure of age-hardened AlSi9Cu3 cast alloy

• Autorzy: Hurtalova L. , Tillova E.
• Języki publikacji: EN

Abstrakty

EN

The paper describes the influence of age-hardening by solution treatment at 515 C with holding time 4 hours, water quenching at 40 C and artificial aging at different temperature 130 C, 150 C and 170 C with different holding time 2, 4, 8, 16 and 32 hours on mechanical properties (strength tensile and Brinell hardness) and changes in the morphology of eutectic Si, Fe-rich and Cu-rich intermetallic phases in secondary (recycled) AlSi9Cu3 cast alloy. The structure with of black-white etching was observed (Dix-Keller, H2SO4). A quantitative study of changes in the morphology of eutectic Si, Cu-rich and Fe-rich phases was carried out using Image Analyzer software NIS-Elements. The analysis of intermetallic phases was performed on SEM using EDX. Mechanical properties were measured in line with STN EN ISO. Age-hardening led to changes in the microstructure including spheroidization and coarsening of eutectic silicon, gradual disintegration, shortening and thinning of Fe-rich intermetallic phases, the dissolution of precipitates and the precipitation of finer hardening phase (Al2Cu), further increase in the hardness and tensile strength in the alloy.

Słowa kluczowe

EN

AlSi9Cu3 cast alloys; age-hardening; quantitative assessment; intermetallic phases

PL

utwardzenie; właściwości mechaniczne

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2010
• Tom: Vol. 15, no 2
• Strony: 355--362
• Opis fizyczny: Bibliogr. 17 poz., rys., wykr.

Twórcy

autor

Hurtalova L.

autor

Tillova E.

• University of Žilina, Faculty of Mechanical Engineering Department of Material Engineering Univerzitná 1, 010 26 Žilina, SLOVAKIA,

Bibliografia

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