ArticleNature communications2021
Aluminum depletion induced by co-segregation of carbon and boron in a bcc-iron grain boundary.
Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 50 citations in OpenAlex.
- Symmetric tilt grain boundaries in uranium nitride and uranium carbide.Scientific reports · 2026Article
- Harnessing atomic-scale order at grain boundaries for giant flexoelectricity.Science advances · 2026Article
- Boron triggers grain boundary structural transformation in steel.Nature communications · 2025Article
- Atomic motifs govern the decoration of grain boundaries by interstitial solutes.Nature communications · 2023Article
- Hydrogen at symmetric tilt grain boundaries in aluminum: segregation energies and structural features.Scientific reports · 2022Article
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Authors and funding
7 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The local variation of grain boundary atomic structure and chemistry caused by segregation of impurities influences the macroscopic properties of polycrystalline materials. Here, the effect of co-segregation of carbon and boron on the depletion of aluminum at a Σ5 (3 1 0 )[0 0 1] tilt grain boundary in a α - Fe-4 at%Al bicrystal is studied by combining atomic resolution scanning transmission electron microscopy, atom probe tomography and density functional theory calculations. The atomic grain boundary structural units mostly resemble kite-type motifs and the structure appears disrupted by atomic scale defects. Atom probe tomography reveals that carbon and boron impurities are co-segregating to the grain boundary reaching levels of >1.5 at%, whereas aluminum is locally depleted by approx. 2 at.%. First-principles calculations indicate that carbon and boron exhibit the strongest segregation tendency and their repulsive interaction with aluminum promotes its depletion from the grain boundary. It is also predicted that substitutional segregation of boron atoms may contribute to local distortions of the kite-type structural units. These results suggest that the co-segregation and interaction of interstitial impurities with substitutional solutes strongly influences grain boundary composition and with this the properties of the interface.
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Registered trials
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