Atomic motifs govern the decoration of grain boundaries by interstitial solutes.

ABSTRACT: Grain boundaries, the two-dimensional defects between differently oriented crystals, tend to preferentially attract solutes for segregation. Solute segregation has a significant effect on the mechanical and transport properties of materials. At the atomic level, however, the interplay of structure and composition of grain boundaries remains elusive, especially with respect to light interstitial solutes like B and C. Here, we use Fe alloyed with B and C to exploit the strong interdependence of interface structure and chemistry via charge-density imaging and atom probe tomography methods. Direct imaging and quantifying of light interstitial solutes at grain boundaries provide insight into decoration tendencies governed by atomic motifs. We find that even a change in the inclination of the gr

SUBMITTER: Zhou X 

PROVIDER: S-EPMC10267137 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature