|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Magnesium Technology 2018
||Deformation Processing of AZ31 and ZK60 Using a Novel Tube-equal Channel Angular Pressing (t-ECAP) Technique
||Abhinav Srivastava , Bilal Mansoor, Matthew Vaughan, Karl Ted Hartwig, Ibrahim Karaman
|On-Site Speaker (Planned)
Fabrication of Magnesium alloy tubes with sufficient strength is of particular interest for load bearing applications. The as-cast or as-extruded Mg alloys have large grain size with undesired texture which provides inadequate strength to the material. The present study focuses on using a novel severe plastic deformation technique of tube-Equal Channel Angular Pressing (t-ECAP) to obtain grain refinement in Mg alloy tubes. AZ31 and ZK60 alloy tubes were t-ECAP processed at various extrusion rates, temperatures and tool die angles. The tubes were pressed in a constraint manner over a mandrel using a hollow cylindrical punch deforming the tubes radially outward. Mechanical properties, microstructural characterization and texture analysis were observed. The objective of this study is to obtain improved properties in Mg alloy tubes as a result of grain refinement, modest level of texture, axisymmetric and circumferentially uniform microstructure by t-ECAP.