Influence of Mixing Parameters on Homogeneity of Al/Sic Composites/ Wpływ Parametrów Mieszania Na Jednorodność Kompozytów Al/Sic

The main aim of this work was to study the effect of time and method of Al, SiC powders mixing on the microstructure and mechanical properties of composites. Moreover, the influence of applicating direct extrusion with a reversibly rotating die on the homogeneity of the composites was examined. Micr...

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Bibliographic Details
Published in:Archives of metallurgy and materials 2014-12, Vol.59 (4), p.1493-1498
Main Authors: Wozniak, J., Kostecki, M., Broniszewski, K., Bochniak, W., Olszyna, A.
Format: Article
Language:English
Subjects:
Aluminum
composites
Density
electron microscopy
hardness measurement
Homogeneity
Metallurgy
Microstructure
powder metallurgy
Quantitative analysis
Scanning electron microscopy
Silicon carbide
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Summary:The main aim of this work was to study the effect of time and method of Al, SiC powders mixing on the microstructure and mechanical properties of composites. Moreover, the influence of applicating direct extrusion with a reversibly rotating die on the homogeneity of the composites was examined. Microstructure observations with the use of an optical microscope and scanning electron microscope were applied. A quantitative analysis of composite microstructure was conducted. The density (helium pycnometer method), Vickers hardness and the Young’s Modulus of the composites were also determined. The results show that the homogeneity of Al/SiC composites rises with an increase of mixing time. However, better results were obtained by application of high energy ball milling process. Głównym celem pracy było zbadanie wpływu czasu i metody mieszania proszków Al, SiC na strukture i własnosci mechaniczne kompozytu. Ponadto, zbadano wpływ metody ekstruzji z rewersyjnie rotujaca matryca na jednorodnosc otrzymanych kompozytów. Obserwacje mikrostruktury wykonano przy uzyciu mikroskopii optycznej i elektronowej. Na otrzymanych zdjeciach przeprowadzono ilosciowa analize mikrostruktury. Gestosc kompozytów zbadano za pomoca piknometru helowego. Dodatkowo wyznaczono twardosc Vickersa i modułu Younga wytworzonych materiałów. Wyniki wykazuja, ze jednorodnosc Al/SiC kompozytów wzrasta ze wzrostem czasu mieszania. Jednakze, lepsze wyniki uzyskano w przypadku materiałów, które homogenizowano przy uzyciu mieszania wysokoenergetycznego
ISSN:2300-1909
1733-3490
2300-1909
DOI:10.2478/amm-2014-0254