Abstract: This experiments is used by directional solidification technique and solid-liquid interfacial solute temporal equiliprium methed. It measured cerium equilibrium partition coefficient Ko and studied influence of cerium on manganese and silicon Ko in high manganese steel. Electronic prob microanalysis are used to measure the solute distribution of Ce. Mn. Si in solid and liquid at adjacent of solid-liquid interface.
The results have shown that directional solidification and solid-liquid interfacail solute temporal equilibrium methed is effectivety me-thed with which the. Ko of rare-earth elements are measured. The Value of cerium Ko measured in high manganese steel show that cerium can slightly be solved in austerite. When cerium content increase the Ko of manganese increases, whereas Ko of silicon decreases.