Enhanced Strength-Ductility Synergy in Mg-0.5 wt%Ce Alloy by hot Extrusion

作者：Yu, Hui; Liu, Yu; Liu, Ya; Wang, Dongliang; Xu, Yuling; Jiang, Binan; Cheng, Weili; Huang, Lixin; Tang, Weineng; Yu, Wei^*

来源：Metals and Materials International, 2023, 29(7): 2109-2116.

DOI：10.1007/s12540-022-01354-x

• Mg-Ce alloys
• Extrusion
• Nano-precipitation phase
• Mechanical properties

The microstructure and mechanical properties of micro-alloyed Mg-0.5 wt%Ce alloys are investigated systemically in this study. It shows that Mg-Ce binary system is very sensitive to extrusion temperature. On the one hand, the high tensile yield strength (TYS) of 343 MPa was obtained by extrusion at 250 & DEG;C mainly due to the combined effects of profuse nano-precipitation phase, grain refinement, texture strengthening and high-density dislocation; On the other hand, the excellent elongation of 30% was acquired by extrusion at 300 & DEG;C resulting from the elimination of dislocations as well as the modification of texture. Graphical Abstract

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