Retardation of grain growth in Mg-3Al-1Zn alloy processed by strip-casting method

초록

Grain growth behaviors of the two AZ31 alloy sheets processed by slab- and strip-casting methods were examined and compared. Grain growth rate of the strip-casting processed AZ31 alloy was considerably lower than that of the slab-casting processed AZ31 alloy. The result could be ascribed to the presence of finer Al-Mn compound particles more uniformly and densely distributed in matrix of the strip-casting alloy. Low grain growth rate via effective Zener pinning of the Al-Mn particles notably improved tensile ductility of the AZ31 alloy at elevated temperatures. (c) 2009 Published by Elsevier B.V.

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