Non-crystallographic symmetry of liquid metal, flat crystallographic faults and polymorph transformation of the MC carbide.

The fine lamellar fault structure of primary MC carbide particles in the heat-resistant Fe-Cr-Ni-C alloy of the HP series (0.45C-25Cr-35Ni) in the cast condition has been revealed using transmission electron microscopy. The lamellar fault structure is regarded as an inheritance of the initial melt structure.