Evolution of Mg-5Al-0.4Mn microstructure after rare earth elements addition
Journal Title: Archiwum Odlewnictwa - Year 2011, Vol 11, Issue 2
Abstract
Mg-5Al-0.4Mn-xRE (x = 0, 1, 2, 3 wt.%) magnesium alloys were prepared successfully by casting method. The microstructure was investigated by light microscopy. The influence of rare earth (RE) elements on the area fraction of eutectic was analysed. The obtained results revealed that the as-cast Mg-5Al-0.4Mn alloy consist of α - Mg matrix and eutectic α + γ (where γ is Mg17Al12). However, while rare earth elements were added to the Mg-Al type alloy, Al11RE3 precipitates were formed. The amount of the Al11RE3 precipitates increased with increasing addition of RE, but the amount of γ - Mg17Al12 decreased.
Authors and Affiliations
A. Żydek, J. Kamieniak, K. N. Braszczyńska-Malik
Keywords
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