Ultrafine-grained Mg-Zn-Y-Zr alloy with remarkable improvement in superplasticity

Huizi Chen, Jian Wang, Xiangchen Meng, Yuming Xie, Yulong Li, Long Wan, Yongxian Huang

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Ultrafine-grained structure in Mg-Zn-Y-Zr alloy was achieved towards extraordinary superplasticity induced by friction stir processing. Grain refinement and homogeneous dispersion of precipitates were promoted by the coupled thermo-mechanical effect. The ultra-fined grains size of 1.9 ± 0.4 μm and the superplastic elongation of 642% were obtained. Grain boundary sliding was considered as the predominant superplastic deformation mechanism in ultrafine-grained materials.

Original languageEnglish
Article number130524
JournalMaterials Letters
Volume303
DOIs
StatePublished - 15 Nov 2021
Externally publishedYes

Keywords

  • Metals and alloys
  • Microstructure
  • Recrystallization
  • Severe plastic deformation
  • Superplasticity

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