J Mater Sci Technol ›› 1993, Vol. 9 ›› Issue (3): 190-194.

• Articles • Previous Articles     Next Articles

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

Shenglong DAI Guifu YU Minggao YAN Institute of Aeronautical Materials,Beijing,100095,China   

  • Received:1993-05-28 Revised:1993-05-28 Online:1993-05-28 Published:2009-10-10

Abstract: A modified nucleation and competitive growth kinetic theory considering unsteady nucleation and effect 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.

Key words: undercooling, nucleation, Al-Li alloy