Nucleation and Formation of Stable and Metastable Phases in Undercooled AI-Li Melts

摘要

A modified nucleation and competitive growth kinetic theory considering unsteady nucleation andeffect of composition in dilute binary alloys was suggested,based on which the selections of δ.δ’and α phases in undercooled Al-Li melts were summarized by both isothermal and continuous cool-ing treatment methods.