... was the important element to control creep rupture life and elevated temperature ductility. S segregated to grain boundaries at elevated temperatures, and blocky fine sulfide particles with smooth surface distribute on the grain boundaries. The presence of sulfides became effective nucleation sites...

... degrees of temper embrittlement for the steel. Charpy V-notch impact tests and Auger electron spectroscopy analysis were performed on embrittled 2.25Cr-1Mo steels to establish the relation between the shift of FATT and the change in the concentration of phosphorus segregated in the grain boundary...