Precipitate formations with self-adaptive elemental diffusion and segregation in T92 steel

A detailed characterization of the composition and evolution of precipitates during thermal exposure (0–10000 h at 650 °C) of T92 steel was carried out using a combination of transmission electron microscopy (TEM), high angle annular dark field (HAADF) imaging, energy-dispersive X-ray spectrometry (EDS) analysis, scanning electron microscopy (SEM) and first-principles calculations. It is shown that MX in T92 steel can be expressed as V/Nb(C,N)...