DIRECTIONAL GROWTH OF EUTECTIC Al-Li COMPOSITE MATERIALS
PENG Delin; MIN Guanghui; AN Geying; LIU Hongbo (Harbin Institute of Technology; Harbin 150001)
Cite this article:
PENG Delin; MIN Guanghui; AN Geying; LIU Hongbo (Harbin Institute of Technology; Harbin 150001). DIRECTIONAL GROWTH OF EUTECTIC Al-Li COMPOSITE MATERIALS. Acta Metall Sin, 1996, 32(9): 993-997.
Abstract The crystal growth criterion was studied to obtain eutectic composite materials for hypoeutectic Al-Li alloy. It is shown that the solid/liquid interface exhibits a stable and planar form and the ragular eutectic structure can be obtained when 6.5×10~5 K·s·cm~(-2)≤ G_L/R< 11×10~5K·s·cm~(-2). The morphology of β phase (AlLi) is bar-like in Al-Li eutectic structure.