  Solute decoration at grain boundaries (GB) leads to a number of phenomenon
such as changes in interface structure,mobility,cohesion etc.Recent
experimental investigations on interfacial segregation in steels are based on
microstructural characterisation using two correlative methodologies,
namely,Transmission Electron Microscopy-Atom Probe Tomography (APT) and
Electron Backscatter Diffraction-APT.Considering the growing interest in this
avenue,the present review is aimed at addressing the common adsorption
isotherms used for quantifying interfacial segregation and providing an
overview of the present state of experimental research in the area of GB
segregation in steels.The areas where an understanding of GB segregation may be
utilised have also been highlighted with a focus on the experimental challenges
associated with understanding GB segregation in steels.
