Friction stir extrusion for fabricating Mg-RE alloys with high strength and ductility

摘要

We proposed a severe plastic deformation process named friction stir extrusion to fabricate high strength-and-ductility rare-earth containing Mg alloys. Grain refinement and homogeneously dispersion of second-phases were obtained under the coupling thermo-mechanical effect, which resulted in the yield strength, ultimate strength and compression strain increased by 42.5%, 63.6% and 35.5% respectively.

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