先进材料疑固实验室 Nucleation Laboratory of Advanced Materials Solidification a phase nucleation temperature:T=(Ti(C)-4T) B phase nucleation temperature:=(T(C)-4T, Where,T(Co)T(C)liquidus temperature,4T undercooling T T △T% me Effective liquidus line △T 上浒充通大学 SHANGHAI JIAO TONG UNIVERSITYNucleation α phase nucleation temperature: β phase nucleation temperature: Where, liquidus temperature, undercooling