PT Journal
AU Dvorsky, D
   Kawamura, Y
   Inoue, S
   Kubasek, J
   Necas, D
   Heller, L
   De Prado, E
   Duchon, J
   Svora, P
   Cavojsky, M
   Vojtech, D
TI Improving Strength and Ductility in Mg-Y-Zn alloy via Pre-deformation Prior to Extrusion
SO Manufacturing Technology Journal
PY 2025
BP 455
EP 459
VL 25
IS 4
DI 10.21062/mft.2025.059
DE Magnesium; LPSO; Kinking; Mechanical properties; Extrusion
AB The Mg-Y-Zn alloy system is well known for its outstanding combination of high strength and ductility, even at relatively low concentrations of alloying elements. This exceptional performance is primarily at-tributed to its characteristic microstructure, which features Long-Period Stacking Ordered (LPSO) phas-es and the distinctive Mille-Feuille Structure (MFS). Kink-induced strengthening, developed during thermomechanical processing, has emerged as a promising strategy to simultaneously enhance strength and ductility. In this study, the beneficial effect of pre-deformation aimed at introducing additional kinks into the microstructure prior to extrusion is demonstrated. The subsequent extrusion process promotes dynamic recrystallization (DRX), generating fine DRX grains while preserving kink structures in the non-DRX regions. As a result, the yield strength is enhanced by approximately 80 MPa, accom-panied by a slight improvement in ductility.
ER