Abstract
Pure Mg particles were consolidated by equal-channel angular pressing (ECAP) with back pressure at 423 K. Fully dense bulk Mg with a homogeneous grain structure was obtained. After multiple passes, grains were significantly refined to below 2 µm, resulting in much enhanced yield strength and enhanced ductility. The intense $$\left(10\stackrel{-}{1}1\right)\langle \stackrel{-}{1}2\stackrel{-}{1}0\rangle $$ texture was developed during ECAP, leading to texture softening. The oxide layer on the surface of Mg particles was broken into nano-sized pieces distributed in the matrix, hindering the movement of dislocations and providing dispersion strengthening.
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