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Technical Issues
3/2016 pp. 99-105

Mikrostruktura odlewniczych stopów magnezu wzmacnianych cząstkami Al203


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Abstract

The article discusses problems of performing magnesium alloys composites, reinforced with Al2O3 particles. The chemical composition of casting magnesium alloys, most common alloy elements and their impact on alloy properties were described. The method of producing magnesium composites - „stir casting” and the impact of Al2O3 particles on properties of a composite were also described. Research were performed based on the AZ91D alloy for several different mixing times. The microstructure of an alloy and composite materials, including phases identification and quality of matrix-particle interphase were analysed. Based on the microstructure, the mixing efficiency was set. The percentage of Al2O3 particles in a composite was defined. The results of hardness and impact of mixing time on a microstructure and properties of a Mg-Al2O3 composite were shown.

Key words

Stir Casting, casting magnesium alloys, Al2O3 particles, Mg- Al2O3 composite, hardness

References

1. Kainer, K.U., Magnesium Alloys and Their Applications, Wiley-WCH, 2003. 

2. Dziadoń, A., Magnez i jego stopy, Wydawnictwo Politechniki Świętokrzyskiej, Kielce 2012.

3. Braszczyńska–Malik, N.K., Studium kształtowania mikrostruktury stopów magnez–aluminium, Wydawnictwo WIPMiFS, 2005.

4. Hu, H., 1998: Squeeze casting of magnesium alloys and their composites, Journal of Materials Science, 1998, 6, pp. 1579-1589.

5. Hashim, J., Looney, L., Metal matrix composites: production by the stir casting method, Journal of Materials Processing Technology,1999, 8, pp. 1–7

6. Hassan, S.F., Gupta, M., Development of a novel magnesium/nickel composite with improved mechanical properties, Journal of Alloys Compounds, 2002, 03, L10-L15 (14).

7. Dobrzański, L.A., Tański, T., Dobrzańska–Danikiewicz, A.D., Król, M., Malara, S., Domagała–Dubiel, J., Struktura i własności stopów Mg-Al-Zn, Open Acces Library, 2012, Vol.5 (11), s. 5-10.

8. Kiełbus, A., Adamiec, J., Hetmańczyk, M., Mikrostruktura odlewniczego stopu magnezu GA8, Archiwum odlewnictwa, 2006, R.6, nr 18(1/2), s. 203-208.

9. Braszczyńska-Malik, K.N., Structure pf AZ91 magnesium matrix alloy composite reinforced with graphite particles, Kompozyty, 2008, R 8, nr 3, pp. 242-246.

10. Dobrzański, L.A., Piec M.,  Bilewicz, M., Materiały kompozytowe o osnowie stopu magnezu EN-MCMgAl9Zn1 wzmacniane cząstkami Al2O3, Inżynieria Materiałowa, 2003, R.XXIV, nr 6, s. 605-608.

11. Braszczyńska-Malik, K.N., Bochenek, A., Problemy z korelacją pomiędzy strukturą, a własnościami odlewanych kompozytów metalowych umacnianych cząstkami ceramicznymi, Kompozyty, 2001, nr 1, s. 28-31.

12. Krishnadev, M.R., Angers, R., Krishnadas, N.C.G., The structure and properties of magnesium-matrix composites, Journal of Materials, 1993, 8, pp. 52-54.

13. Kurzawa, A., Kaczmar, J., Bending strength of composite materials with EN AC-44200 matrix reinforced with Ai2O3 particles, Archives of Foundry Engineering, 2015, Vol. 15, iss. 1 spec. pp. 61-64.

14. Kaczmar, J., Granat, K., Grodzka, E., Kurzawa, A., Tribological properties of Cu based composite materials strengthened with Al2O3 particles, Archives of Foundry Engineering, 2012, Vol. 12, iss. 1 spec. pp. 33-36.

15. Kurzawa, A., Grodzka, E., Janus, A., Kaczmar, J., Tribological properties of AC44200 based composites strenghead with Al2O3 particles, Archives of Foundry Engineering, 2011, Vol. 11, 2, pp. 69-74.

16. Srivastava, V.C., Sahoo, K.L., 2007. Processing and mechanical properties of SiC reinforced cast magnesium matrix composites by stir casting process, Materials Science and Engineering, 2007, 7, pp. 357–364.

17. Piórkowski, P., Mikrostruktura i wybrane własności materiałów kompozytowych Mg-Al2O3, praca magisterska, Politechnika Wrocławska, 2014.

18. Konopka, Z., Metalowe kompozyty odlewane, Wydawnictwo Politechniki Częstochowskiej, Częstochowa, 2011.