Assessment and quantification of damage in the grade 91 steel partially transformed zone

Damage in the grade 91 steel partially transformed zone has historically been associated with many different types of features in the microstructure. Susceptible features responsible for the nucleation of damage are frequently cited to include particles such as laves phase, coarse M23C6, inclusions, nitrides, or interactions between creep strong and creep week grains, grain boundaries and potentially other sources. Few studies have attempted to...