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Fatigue performance under axisymmetric push–pull loading of a magnesium alloy Mg–6Zn–0.5Zr (ZK60) after processing by integrated extrusion and equal-channel angular pressing was investigated. Such processing was shown to nearly treble the endurance limit of the alloy, raising it to 160MPa. It was established that the high-cycle fatigue performance of ZK60 is primarily controlled by dislocation substructure,...
The paper demonstrates the feasibility of upscaling of severe plastic deformation (SPD) techniques using an integrated process that combines conventional extrusion and equal channel angular pressing in a single processing step. The process was applied for production of magnesium ZK60 bars 16mm in diameter and up to 4m in length. The processed material exhibited an excellent balance of strength and...
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