Analyses of impurities in cast magnesium-rare earth elements alloys

• Autorzy: Braszczyńska-Malik, K. N. , Żydek, A. , Polis, A.
• Języki publikacji: EN

Abstrakty

EN

Microstructure analyses of impurities in binary Mg-3%RE and Mg-8%RE alloys are presented. Light microscopy and scanning electron microscopy (SEM+EDX) techniques were used to characterize the investigated material. In microstructure, besides [alpha]-Mg solution and [alpha]+Mg12RE eutectic, some intermetallic compounds with different morphology (needle-like, square-like) were observed. X-ray phase analyses showed that intermetallic compounds were RE3Si2 and RE2Fe14Si3. Their location in axis of primary [alpha]-Mg dendrites suggests that some parts of them may act as heterogeneous nucleation sits for magnesium.

Słowa kluczowe

PL

stop magnezu; pierwiastki ziem rzadkich; mikrostruktura

EN

magnesium alloy; rare earth elements (REE); microstructure

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 4
• Strony: 19-22
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Braszczyńska-Malik, K. N.

autor

Żydek, A.

autor

Polis, A.

• Częstochowa University of Technology, Institute of Materials Engineering, Division of Chemistry, Al. Armii Krajowej 19, 42-200 Częstochowa, Poland,

Bibliografia

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• [3] G. Ben-Hamu, D. Eliezer, K.S. Shin, S. Cohen, The relation between microstructure and corrosion behavior of Mg-Y-RE-Zr alloys, Journal of Alloys and Compounds, 2007, Vol.431, 269-276.
• [4] I.P. Moreno, T.K. Nandy, J.W. Jones, J.E. Allison, T.M. Pollock, Microstructural characterization of a die-cast magnesium-rare earth alloy, Scripta Materiallia, 2001, Vol. 45, 1423-1429.
• [5] L.L. Rokhlin, Magnesium alloys containing Rare Earth Metals, CRC Press, 2003.
• [6] I.P. Moreno, T.K. Nandy, J.W. Jones, J.E. Allison, T.M. Pollock, Microstructural stability and creep of rare-earth containing magnesium alloys, Scripta Materiallia, 2003, Vol. 48, 1029-1034.
• [7] G. Song, D. John, The effect of zirconium grain refinement on the corrosion behaviour of magnesium-rare earth alloy MEZ Journal of Light Metals, 2002, Vol. 2, 1-16.
• [8] K.N. Braszczyńska-Malik, Microstructure of as-cast experimental binary Mg-RE alloys, Archives of Foundry Engineering, 2008, Vol. 8, Special Issue 1, 19-22.