Novel Magnesium Alloy Processing via Shear-Assisted Processing and Extrusion (ShAPE)
Traditional magnesium alloy manufacturing has often relied on processing within a temperature range that results in liquid phase formation of some of the constituents. These methods are often limited by the equilibrium phase formation states available from the melt. In this work, we will present findings on a recently developed processing approach that enables complex, unique microstructural evolution (often to persistent metastable states) while remaining in the solid phase state. Specifically, the shear assisted processing and extrusion (ShAPE) method as applied to Mg alloys will be presented. Novel microstructural pathways, textural formation and mechanical properties will be discussed. These results point to the ability to design and engineering novel Mg materials with unprecedented properties and performance.
KeywordsMagnesium Extrusion Shear ShAPE Friction
Partial financial support of this work was enabled through the MS3 (Materials Synthesis and Simulation across Scales) Initiative at the Pacific Northwest National Laboratory, a multi-program US Department of Energy Laboratory operated by Battelle under contract DE-AC05-76RL01830. The authors would also like to thank the US Department of Energy Vehicle Technologies Office and Office of Fuel Cell and Vehicle Technologies. S.N. Mathaudhu was supported in part by the National Science Foundation under Grant no. 1463679. A portion of the research was performed using EMSL, a DOE Office of Science User Facility sponsored by the Office of Biological and Environmental Research.
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