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Calculation and validation of a grain boundary complexion diagram for Bi-doped Ni

  • Author(s): Zhou, N;
  • Yu, Z;
  • Zhang, Y;
  • Harmer, MP;
  • Luo, J
  • et al.
Abstract

A grain boundary (GB) “phase” (complexion) diagram is computed via a lattice type statistical thermodynamic model for the average general GBs in Bi-doped Ni. The predictions are calibrated with previously-reported density functional theory calculations and further validated by experiments, including both new and old aberration-corrected scanning transmission electron microscopy characterization results as well as prior Auger electron spectroscopy measurements. This work supports a major scientific goal of developing GB complexion diagrams as an extension to bulk phase diagrams and a useful materials science tool.

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