Analysis of the failure causes in an element made of AlSi11Cu2(Fe) alloy

• Autorzy: Golański G. , Zyska A. , Werner K. , Stokłosa H.
• Języki publikacji: EN

Abstrakty

EN

The paper presents results of research on a cross element damaged during the service, made of the casting alloy of aluminum - AlSi11Cu2(Fe) (AK132). Performed research was to explain the reasons for this damage and included microstructural observation as well as the investigation on mechanical properties. On the basis of the tests carried out it has been noticed that there is significant inhomogeneity of the structure characterized by the presence of both: normally modified eutectic areas (\alfa + Si) and needle-shaped primary silicon crystals. On the cross-section of the cast wall there were numerous casting defects of diverse size observed - shrinkage porosity. On the basis of the research it has been concluded that the damage of the examined element occurred as a result of fatigue cracking initiated from the surface near the marks left by the knock-outs, while the subsequent propagation of the crack ran along the primary precipitates of silicon crystals as well as through the crystals.

Słowa kluczowe

EN

metallography; casting defect; aluminium alloy

PL

metalografia; wada odlewnicza; stop aluminium

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 2
• Strony: 29--34
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Golański G.

autor

Zyska A.

autor

Werner K.

autor

Stokłosa H.

• Institute of Materials Engineering, Czestochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa,

Bibliografia

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