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March 15, 2026China FoundryOpen Access

Effect of grain size on fatigue behaviors of Mg-2.6Nd-0.35Zn-xZr alloys

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Authors

LZLunyong ZhangYCYan-ping ChenXWXian-xing Wang

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Overview

This investigation reveals that grain size significantly affects fatigue behavior in magnesium alloys, suggesting optimal conditions enhance mechanical properties.

Key Points

  • The aim is to evaluate how grain size, influenced by Zr addition, affects the fatigue behaviors of Mg-2.6Nd-0.35Zn alloys.
  • Characterization of stress-life curves (S-N)
  • Analysis of fatigue crack propagation
  • Evaluation of fracture surface morphology
  • Determination of stress intensity factor
  • Assessment of crack propagation threshold
  • Coarse-grained specimens exhibit greater resistance to fatigue crack propagation than fine-grained ones.
  • Coarse grains promote intergranular fracture; fine grains favor transgranular fracture.
  • Fine-grained samples show longer total fatigue life due to superior crack initiation resistance.
  • Heat treatment affects grain size and mechanical properties.

Cite This Study

Zhang et al. (2026) studied this question.

synapsesocial.com/papers/69b606ea83145bc643d1d73ehttps://doi.org/10.1007/s41230-026-5118-1
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