Enhanced mechanical properties of Mg–Ni–xRE alloys via hot extrusion

The effects of mischmetal addition and hot working on the enhancement of microstructure and mechanical properties of Mg–Ni alloys were studied. It was revealed that grain refinement could be achieved by introducing rare earth (RE) elements in the as-cast condition, and more pronouncedly, by the extrusion process in the wrought condition. While the formation of intergranular brittle phases via RE addition impaired the as-cast mechanical...