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The University of Southampton
Engineering

Research project: Evaluating homogeneity in AZ91 magnesium alloy processed by high-pressure torsion and equal-channel angular pressing

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The objective of this project is to investigate and evaluate microstructural homogeneity in an AZ91 magnesium alloy processed by high-pressure torsion (HPT) and equal-channel angular (ECAP) pressing using Vickers microhardness profiles, Electron Backscatter Diffraction (EBSD), tensile testing and Transmission Electron Microscopy (TEM).

Low density and high strength/weight magnesium alloys are widely used in several applications such as automotive, industrial machinery, materials-handling, and aerospace equipment. Because of their hexagonal close-packed crystal structure, they generally have only a limited ductility at room temperature. In this project, the magnesium AZ91 alloy is processed by HPT and ECAP to produce ultrafine-grained structures and then the microstructures and mechanical properties are characterized.

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