Microstructure and Mechanical Properties of Si and Sb Added AZ91 Magnesium Alloy

From: Metallurgical and Materials Transactions | Date: August 1, 2005| Author: Pai, B C; Pillai, U T S; Srinivasan, A | Copyright information

The effect of Si (individual and combined) with 0.2 pct Sb additions on the microstructure and mechanical properties of permanent mold AZ91 alloy has been studied. The results indicate that Si addition introduces a Chinese script Mg^sub 2^Si phase at the grain boundary along with the Mg^sub 17^Al^sub 12^ -β phase and reduces ductility and strength of the alloy both at room and high temperatures. A small amount of Sb addition modifies the Mg^sub 2^Si phase besides distributing it evenly a...

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