Preparation of 2024/3003gradient materials by semi-continuous casting using double-stream-pouring technique

来源期刊：中南大学学报(英文版)2002年第4期

论文作者：李元元 费劲 陈维平 张卫文 邵明

文章页码：229 - 234

Key words：2024/3003 Al alloys; gradient materials; semi-continuous casting

Abstract: The 2024/3003 aluminumgradient alloys are prepared by semi-continuous casting. The influences of throttle bore diameterof embedded nozzle and temperature of internal melton composition distribution, macrostructure, hardness are analyzed, and the stability of gradient distribution of composition, macrostructure and hardness along the axial direction of the ingot is also studied. The results showthat different composition profiles can be achieved by adjustingthe processing parameters; the volume fraction of inner alloy in the ingot can be increased by enlarging the throttle bore diameter and elevating the temperature of inner melt; quasisteady solidification can be realized within 20 s during cast processing, and consistent quality ingot is obtained by controlling the casting speed and liquid height of inner melt.