Article ID Journal Published Year Pages File Type
7881002 Acta Materialia 2014 8 Pages PDF
Abstract
The present study validates the previously reported investigations about segregation of rare-earth (RE) elements at grain boundaries in Mg-RE alloys and ultimately provides a direct visualization of the distribution of the solute atoms in the structure of a Mg-Gd alloy. It is demonstrated that Gd forms a solid solution within the Mg matrix in addition to substantial segregation at high-angle grain boundaries in the form of 1-2 nm clusters, with a postulated face-centered cubic Gd structure. The results suggest significant implications for the texture development during alloy processing and recrystallization, and thus for the mechanical behavior and properties of Mg-RE alloys.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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