The effect of Sr additions on the microstructure and strength of a Mg-5Al-3Ca alloy was investigated by replacing Ca with Sr. In the as-cast alloys, the major intermetallic compound observed at the a-Mg dendrite cell boundary region changes from the Al-rich (Mg, Al) 2 Ca phase to the Mg-rich Mg 17 Sr 2 phase with increasing Sr content. This results in an increased Al solute content in the a-Mg phase in the high-Sr containing alloys. More than 1 wt pct of Sr enhances the solid-solution strength of the a-Mg phase, resulting in the increased compression strength of the alloys.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.