Microstructures of Mg-Al-Zn and Al-Si-Cu cast alloys

• Autorzy: Tański T. , Dobrzański L. A. , Maniara R.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of this paper was to investigate the structure of the MCMgAl6Zn1 magnesium and ACAlSi9Cu aluminium cast alloy in as-cast state. Design/methodology/approach: The following results concern the microstructure of the cast magnesium and aluminium alloys using ZEISS SUPRA 25, Opton DSM-940 scanning and LEICA MEF4A light microscopy, X-ray qualitative microanalysis as well as X-ray analysis. Findings: The analysis of the structure magnesium alloy consists of the solid solution á – Mg (matrix) of the secondary phase g – Mg17Al12 evenly located in the structure. The structure creates agglomerates in the form of needle precipitations, partially coherent with the matrix placed mostly at the grain boundaries. The AC AlSi9Cu and AC AlSi9Cu4 cast aluminium alloys are characterised by a dendritic structure of the á solid solution - as the alloy matrix, as well are characterised by a discontinuous â–Si phase forming the á+â eutectic grains, with a morphology depending on the silicon and copper mass concentration. Research limitations/implications: Taking into account the fact that some of the properties are of great importance only for the surface of the material, the future investigation will concern modelling of the alloy surface using surface layers deposition methods like physical vapour deposition methods. Practical implications: A desire to create as light vehicle constructions as possible and connected low fuel consumption have made it possible to make use of magnesium and aluminium alloys as constructional material in automotive industry. Originality/value: Contemporary materials should possess high mechanical properties, physical and chemical, as well as technological ones, to ensure long and reliable use. The above mentioned requirements and expectations regarding the contemporary materials are met by the non-ferrous metals alloys used nowadays, including the magnesium and aluminium alloys.

Słowa kluczowe

EN

metallography; magnesium alloy; aluminium alloy; structure

PL

metalografia; stop magnezowy; stop aluminium; struktura

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2010
• Tom: Vol. 38, nr 1
• Strony: 64--71
• Opis fizyczny: Bibliogr. 17 poz., rys., tabl.

Twórcy

autor

Tański T.

autor

Dobrzański L. A.

autor

Maniara R.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology,ul. Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

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