  Modern engineering alloys have bespoke microstructures, where features such
as precipitates are used to control properties. In many Ni-based alloys,
carbo-nitride precipitates are introduced to strengthen and improve
performance. These precipitates can be distributed throughout the
microstructure and niobium rich carbides are often found at grain boundaries.
In this work, we used combined energy dispersive X-ray spectroscopy (EDS) and
electron backscatter diffraction (EBSD) to characterise the population of these
precipitates. Processing of the EDS signal is used to label the Mo/Nb-rich
precipitates, and their size and location are measured from maps using a
circular Hough transform. This label map is combined with the grain boundary
network (from EBSD analysis). Statistical analysis, using ANOVA testing,
reveals differences in chemistry between carbides found in Ni-rich matrix grain
interiors, on random high angle boundaries and on special boundaries ({\Sigma}3
and {\Sigma}9). These results are compared between wrought and power metallurgy
product forms. These distributions are discussed in the context of their
performance within demanding environments, such as reactor core internals.
