Microstructure and Mechanical Properties of High Shear Material Deposition of Rare Earth Magnesium Alloys WE43

In this work, microstructural characterization and mechanical properties are investigated for rare earth magnesium alloy, WE43, manufactured via a high-shear deposition process. The unique solid-state manufacturing process deposits feedstock via a hollow nonconsumable rotating cylindrical tool, thereby generating heat and plastically deforming the feedstock through controlled pressure as successive layers are metallurgically bonded upon a substrate. In this research, dynamic recrystallization and grain refinement is characterized for the as-deposited WE43 samples using Electron Backscattered Diffraction (EBSD). The EBSD results for as-deposited WE43 depict a refined grain structure formed by dynamic recrystallization (DRX). To quantify material properties, quasi-static tension tests were performed in three orthogonal directions to elucidate mechanical performance and isotropic behavior of as-deposited WE43.