Precision Thermal Treatments, Atom Probe Characterization, and Modeling to Describe the Fe-Cr Metastable Miscibility Gap

Abstract The Fe-Cr metastable miscibility gap has been studied by high-precision thermal treatments, Vickers micro-hardness (HV) measurements, and atom probe tomography (APT). Thermodynamic modeling further supplements the experimental work. results obtained show that recent thermodynamic descriptions of found in literature generally overestimates consolute temperature. We can source ambiguity previous studies is most likely a lack clear distinction between Cr-Cr clustering $$ \alpha^{\prime} α ′ formation. This here made APT results, it leads to determined temperature 580 ± 1 °C for Fe 0.50 Cr . revised captures consistent with overall picture from data literature. Graphic