ABSTRACT
ABSTRACT: Phosphorus segregation at prior austenite grain boundaries (PAGBs) in 2.25Cr1Mo steel with different degrees of embrittlement has been investigated using X-ray spectroscopy in a field emission gun scanning transmission electron microscope (FEGSTEM). The results indicate that P concentration at P AGBs increases with ageing time, which agrees well with the prediction of McLean's equilibrium segregation model.
