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June 19, 2026Science AdvancesOpen Access

Plasticity in brittle intermetallics enabled by framework of amorphous interfaces and preexisting dislocations

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Authors

KXKe XuAMAnand MathewZSZhongxia Shang

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Overview

Randomized trial demonstrates enhanced plasticity in brittle intermetallics, indicating improved structural applications.

Key Points

  • The research aims to improve plasticity in brittle intermetallics using amorphous interfaces and dislocations.
  • Introduced framework of amorphous interfaces and preexisting dislocations into nanocrystalline CoAl intermetallics
  • Conducted micropillar compression tests to assess mechanical properties
  • Utilized molecular dynamics simulations to analyze dislocation behavior.
  • Achieved yield strength over 6 gigapascals and sustained work hardening to approximately 8.5 gigapascals
  • Observed compressive plastic strain exceeding 15% indicating significant plasticity
  • Dislocations emitted from crystallized regions enhanced dislocation propagation and storage.

Cite This Study

Xu et al. (2026) studied this question.

synapsesocial.com/papers/6a34dd4965a5b0777af2d1f0https://doi.org/10.1126/sciadv.aeb0766
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