EFFECT OF THICKNESS REDUCTIONS ON MICROSTRUCTURE AND NANO-MECHANICAL PROPERTIES OF AZ31 MAGNESIUM ALLOY IN FLOW-FORMING

Han  Zhang; Tingting  Zhang; Jie  Zhang; Zhihang  Yan; Wenxian Wang

doi:10.17222/mit.2022.659

Han Zhang College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, China
Tingting Zhang College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan, China
Jie Zhang College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, China
Zhihang Yan College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, China
Wenxian Wang College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, China

DOI: https://doi.org/10.17222/mit.2022.659

Keywords: flow forming, microstructure, nanomechanical properties, hardness

Abstract

The effect of reducing the thinning rate when flow forming AZ31B magnesium alloy barrels on the microstructure, crystal orientation, micro-, nano- and macro-mechanical properties was investigated. The results demonstrate that when the magnesium alloy undergoes different degrees of plastic deformation after flow forming, the grain size and dislocation density inside the crystal change greatly, and the evolution pattern of the organization has a significant effect on the mechanical properties of the materials. The stress-strain curve of the cylindrical parts was obtained by nano-indentation and hardness. This is important to improve the mechanical properties of the magnesium alloy.

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