Effect of Microstructure on the Corrosion Resistance of the AE42 Magnesium Alloy Processed by Rotary Swaging
P. Minárik a, M. Zemkováa, R. Král a, M. Mhaede b, L. Wagner b and B. Hadzima c
aCharles University in Prague, Department of Physics of Materials, Prague, Czech Republic
bInstitute of Materials Science and Technology, Clausthal Univeristy of Technology, Clausthal-Zellerfeld, Germany
cResearch Center of the University of Žilina, Žilina, Slovak Republic, and Faculty of Mechanical Engineering, University of Žilina, Žilina, Slovak Republic
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Microstructure and corrosion resistance of the AE42 commercial alloy processed by extrusion and rotary swaging were investigated. Microstructure characterization showed an increasing volume fraction of the refined grains with increasing stage of swaging processing. However, their presence was limited solely to the peripheral ring of ≈1 mm in all studied conditions of swaged material. Corrosion resistance investigation showed continuous decrease of polarization resistance that was attributed to the grain refinement and insufficient homogenization of the alloying elements during the swaging process.

DOI: 10.12693/APhysPolA.128.805
PACS numbers: 81.05.-t, 82.45.Bb