Structure investigation of ball milled composite powder based on AlSi5Cu2 alloy chips modified by SiC particles

• Autorzy: Suśniak M. , Karwan-Baczewska J. , Dutkiewicz J. , Actis Grande M. , Rosso M.

Warianty tytułu

PL

Badania strukturalne mielonego proszku kompozytowego na osnowie wiór stopu aluminium modyfikowanych cząstkami SiC

• Języki publikacji: EN

Abstrakty

EN

The paper is focused on the processing of aluminum alloy chips using powder metallurgy. Chips obtained from recycled AlSi5Cu2 alloy were ball milled with the addition of silicon carbide powder with an average size of 2μm. Mechanical alloying process was employed to obtain homogeneous composite powder. The effect of processing time (0 - 40h) on the homogeneity of the system was evaluated, as well as a detailed study of the microstructure of AlSi5Cu2 aluminum chips and SiC particles during MA was carried out. Addition of silicon carbide (10, 20wt%) to recycled aluminium chips and application of MA lead to fragmentation of the homogeneous composite powder down to particle size of about 3μm and spheroidization. The addition of hard SiC particles caused reinforcement and reduced the milling time. Higher content of silicon carbide and longer processing time allowed to obtain AlSi5Cu2/SiC powders with microhardness ~500HV0,025. The results of MA were investigated with SEM, EDS, LOM, XRD and showed that relatively homogeneous distribution of SiC reinforcements in the matrix as well as grain refinement of aluminum solid solution down to 50nm can be obtained after 40h of processing.

PL

W artykule przedstawiono metodę otrzymywania proszku kompozytowego na osnowie wiór stopu aluminium AlSi5Cu2 pochodzących z recyklingu z dodatkiem węglika krzemu (SiC-α, 2μm). Określono wpływ czasu mielenia oraz dodatku SiC na mikrostrukture i właściwości proszku kompozytowego.Dodatek SiC (10, 20%mas) do wiór stopu aluminium i zastosowanie mechanicznej syntezy pozwala na otrzymanie jednorodnego i drobnoziarnistego proszku o wielkości 3μm i kształcie zbliżonym do sferycznego. Dodatek twardych cząstek SiC powoduje umocnienie proszku oraz skrócenie czasu mielenia. Dodatek SiC i zastosowanie 40h mielenia pozwala otrzymać cząstki proszku o mikrotwardości około 500 HV0,025. Badania proszku kompozytowego przeprowadzone na mikroskopie optycznym, SEM oraz TEM potwierdziły jednorodne rozmieszczenie cząstek SiC w osnowie oraz zmniejszenie wielkości ziarna do 50nm po 40 godzinach procesu.

Słowa kluczowe

EN

AlSiCu alloy chips; recycling; powder metallurgy; mechanical alloying; Al-SiC composite powder

PL

wióry stopu aluminium; recykling; metalurgia proszków; synteza mechaniczna; proszek kompozytowy Al-SiC

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2013
• Tom: Vol. 58, iss. 2
• Strony: 437--441
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Suśniak M.

• AGH University of Science and Technology, Faculty of Non-Ferrous Metal, al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Karwan-Baczewska J.

• AGH University of Science and Technology, Faculty of Non-Ferrous Metal, al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Dutkiewicz J.

• Polish Academy of Sciences, Institute of Metallurgy and Materials Engineering, Poland

autor

Actis Grande M.

• Politecnico di Torino, Department of Applied Science and Technology, Alessandra, Italy

autor

Rosso M.

• Politecnico di Torino, Department of Applied Science and Technology, Alessandra, Italy

Bibliografia

• [1] N. Zhao, P. Nash, X. Yang, The effect of mechanical alloying on SiC distribution and properties of 6061 aluminum composite, Journal of Materials Processing Technology 170, 586-592 (2005).
• [2] C. Suryanarayana, Mechanical alloying and milling, Progress in Materials Science 46, 1-184 (2001).
• [3] M. Samuel, A new technique for recycling aluminum scrap, Journal of Materials Processing Technology 135, 117-124 (2003).
• [4] J. B. Fogagnolo, E. M. Ruiz-Navas, M. A. Simón, M. A. Martinez, Recycling of aluminum matrix composite chips by pressing and hot extrusion, Journal of Materials Processing Technology 143-144, 792-795 (2003).
• [5] J. Gronostajski, A. Matuszak, The recycling of metals by plastic deformation: an example of recycling of aluminum and its alloys chips, Journal of Materials Processing Technology 92-93, 35-41 (1999).
• [6] W. Chmura, J. Gronostajski, Mechanical and tribological properties of aluminum-base composites produced by recycling of chips, Journal of Materials Processing Technology 106, 23-27 (2000).
• [7] H. Dybiec, K. Pieła, J. Piotrowska, Recykling wiórów AlCu3,8 metoda konsolidacji plastycznej, Rudy i Metale Niezelazne 54, 676-684 (2009).
• [8] M. Suśniak, J. Karwan-Baczewska, J. Dutkiewicz, M. Actis Grande, Structural analysis of composite powders obtained from recycled material, Inżynieria Materiałowa 186, 86-89 (2012).