Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 701, Issue -, Pages 56-68Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2017.06.062
Keywords
Rapid solidification; Magnesium alloy; Microstructure; ShAPE; Friction consolidation extrusion; EBSD
Categories
Funding
- MS3(Materials Synthesis and Simulation across Scales) Initiative at Pacific Northwest National Laboratory
- Office of Biological and Environmental Research
- National Science Foundation [1463679]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1463679] Funding Source: National Science Foundation
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Shear Assisted Processing and Extrusion (ShAPE) -a novel processing route that combines high shear and extrusion conditions- was evaluated as a processing method to densify melt spun magnesium alloy (AZ91E) flake materials. This study illustrates the microstructural regimes and transitions in crystallographic texture that occur as a result of applying simultaneous linear and rotational shear during extrusion. Characterization of the flake precursor and extruded tube was performed using scanning and transmission electron microscopy, x-ray diffraction and microindentation techniques. Results show a unique transition in the orientation of basal texture development. Despite the high temperatures involved during processing, uniform grain refinement and material homogenization are observed. These results forecast the ability to implement the ShAPE processing approach for a broader range of materials with novel microstructures and high performance.
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