An ultra-high formability at room temperature induced by continually dynamic micro-nanocrystallization of Mg rare earth alloy

Abstract

Particular lattice structure restrains the plastic formability of Mg alloy, and thus an effective approach is needed to conquer this bottleneck. This short communication presents that a thin sheet with 0.26 mm thickness of Mg rare earth alloy was prepared by rolling with 97.4% total reduction at room temperature. A deformation mode of continually dynamic micro-nanocrystallization (CDMN) dominated the plastic deformation process in which an extreme grain refinement could be observed. This work hopefully introduces a novel perspective to the plastic deformation field of Mg alloy.