摘要
Hypereutectic Al-Si alloy tubes were produced by centrifugal casting process using an electromagnetic field (EMF). A gradient distribution of the primary Si particles was formed along the tube thickness direction. In the absence of EMF the primary Si moves to inner periphery with increasing rotation speed. The distribution of primary Si can be controlled by the EMF. With increasing electromagnetic field intensity, the primary Si moves from the inner periphery to the outer periphery of the tubes. Most of the primary Si can be driven to the outer if the electromagnetic field intensity is increased to a certain value. It is found that the particle distribution and local volume fraction vary with both the rotation speed and the electromagnetic field intensity.
Hypereutectic Al-Si alloy tubes were produced by centrifugal casting process using an electromagnetic field （EMF）. A gradient distribution of the primary Si particles was formed along the tube thickness direction. In the absence of EMF the primary Si moves to inner periphery with increasing rotation speed. The distribution of primary Si can be controlled by the EMF. With inceasing electromagnetic field intensity, the primary Si moves from the inner periphery to the outer periphery of the tubes. Most of the primary Si can be driven to the outer if the electromagnetic field intensity is increased to a certain value. It is found that the particle distribution and local volume fraction vary with both the rotation speed and the electromagnetic field intensity.
出处
《中国有色金属学会会刊：英文版》
CSCD
2006年第A03期1292-1294,共3页
Transactions of Nonferrous Metals Society of China
基金
Project (50474087) supported by the National Natural Science Foundation of China
关键词
铝
硅
合金
梯度
金属铸造
金属加工
Al-Si alloy
centrifugal casting
electromagnetic field （EMF）
gradient distribution
作者简介
Corresponding author： LIU Wei; Tel： ＋86-10-62772853; E-mail： liuw@mail.tsinghua.edu.cn
