Compressive deformation behavior at room temperature-773 K 14 in Mg-0.2 mass%(0.035at.%)Ce alloy

Cc is an efficient additive element because Cc addition makes Mg cold-workable. In the present work, compressive properties of Mg-0.2 mass%(0.035 at.%)Ce alloy were investigated at room temperature - 773 K to understand the effects of Cc on deformation mechanisms. Ductility at room temperature was increased by Cc addition, but it decreased at 573 K. Thus, the very small Cc addition of 0.035 at.%,, strongly affected the mechanical properties of Mg. The unique behavior of the Mg-Ce alloy was related to homogeneous deformation due to non-basal slips, although the cla ratio of the Mg-Ce alloy was the same as that of pure Mg. It is therefore suggested that the change in atomic binding states caused by Cc addition plays an important role in deformation mechanisms. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.