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June 6, 2026PLoS ONEOpen Access

Mechanistic origin of high-cycle fatigue enhancement by grain refinement in AZ81 magnesium alloy for sports equipment

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Authors

DLDong LiLHLiuyong He

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Overview

Demonstrates enhanced fatigue strength in a fine-grained AZ81 magnesium alloy, suggesting improvements for sports equipment design.

Key Points

  • The aim is to investigate how grain refinement affects the high-cycle fatigue behavior of AZ81 magnesium alloy.
  • Investigated grain size–dependent high-cycle fatigue behavior of AZ81 Mg alloy with comparable basal textures.
  • Compared mechanical properties of fine-grained (~8 μm) and coarse-grained (~62 μm) samples.
  • Analyzed microstructural changes related to fatigue performance.
  • Yield strength increased from 134.2 MPa to 164.5 MPa (~22.6%) in fine-grained samples.
  • Ultimate tensile strength rose from 231.7 MPa to 283.7 MPa (~22%) while maintaining ductility.
  • Fatigue strength at 10⁶ cycles increased from 80 MPa to 110 MPa, a 37.5% enhancement.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/6a23bb2071a5da9775e76a60https://doi.org/10.1371/journal.pone.0350435
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