Uncovering process-structure relationships associated to the hot isostatic pressing of the high-speed steel PMHS 3-3-4 through novel microstructural characterization methods

•Novel stereology methods and data analysis revealed new process-structure links.•The powder solidification has an enduring effect on the final microstructure.•Dendritic solidificationof massive particles produces slightly elongated carbides.•Cellular solidification is responsible for smaller, more angular carbides.•Longer times in the hot isostatic press cause carbide coarsening and rounding.