Two experimental magnesium alloys containing neodymium and zinc (Mg-5Nd-1Zn and Mg-1Nd-1Zn) were processed by severe plastic deformation (SPD) method - equal channel angular pressing (ECAP). The effect of SPD processing on the microstructure was studied by light microscopy (LM) and scanning electron microscopy (SEM) including electron backscatter diffraction (EBSD). A significant grain refinement was observed after 8 passes of ECAP in both alloys resulting in homogenous ultra-fine grained condition. Microstructure evolution significant affected mechanical properties, which were studied by microhardness measurements and compression deformation tests. Both yield compression strength σ0.2 and microhardness significantly increased after ECAP when compared to the extruded or as-cast counterparts.Keywords: Magnesium alloys, ultra-fine grained materials, equal channel angular pressing, electron backscatter diffraction
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