Intermetallic phase particles in 6082 aluminium alloy

• Autorzy: Mrówka-Nowotnik, G. , Sieniawski, J. , Wierzbińska, M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In the technical 6xxx Al alloys besides the intentional additions Mg i Si, transition metals and impurities (Fe and Mn) are always present. Even not large amount of these impurities causes the formation a new phase components. The exact composition of the alloy and casting condition will directly influence the selection and volume fraction of intermetallic phases. During casting of 6xxx alloys, a wide variety of Fe-containing intermetallics phases Al-Fe, Al-Fe-Si and Al-Fe-Mn-Si are formed among the aluminium dendrites. The aim of this work was to examine the composition and morphology of complex microstructure of the intermetallics in 6082 aluminium alloy. Design/methodology/approach: Light microscopy (LM), electron microscopy techniques (SEM and TEM) in combination with X-ray analysis (SEM/EDS), and X-ray diffraction (XRD) were used. Findings: The examinations of the as-cast alloy after slow solidification at a cooling rate 2°C/min reveal that the microstructure consisted a wide range of intermetallics phases, namely: β -Al5FeSi, α -Al15(FeMn)3Si, Al9Mn3Si, α -Al12Fe3Si, Mg2Si. Research limitations/implications: To facilitate confirmation of the achieved results it is recommended to execute supplementary analysis of the aluminium alloys, 6xxx series in particular. Practical implications: Since the, what involves changes of alloy properties, From a practical position it is important to understand formation conditions of the intermetallics in order to control final components of the alloy microstructure. The importance of this is due to the fact that morphology, crystallography and chemical composition of the intermetallics strongly affect the properties of the alloy. Originality/value: This work has provided essential data about almost all possible intermetallic phases precipitating in 6000 series aluminium alloys.

Słowa kluczowe

PL

stopy metaliczne; mikrostruktura; mikroskopia elektronowa; faza międzymetaliczna

EN

metallic alloys; microstructure; electron microscopy; intermetallic phases

• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2007
• Tom: Vol. 28, nr 2
• Strony: 69-76
• Opis fizyczny: Bibliogr. 20 poz., il., wykr.

Twórcy

autor

Mrówka-Nowotnik, G.

autor

Sieniawski, J.

autor

Wierzbińska, M.

• Department of Materials Science, Rzeszow University of Technology, ul. W. Pola 2, 35-959 Rzeszow, Poland,

Bibliografia

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