Semi-solid characteristics and thixoforming of hypereutectic Al-Si alloy

被引：0
|
作者：
Liu, CM [1 ]
He, NJ [1 ]
Li, HJ [1 ]
机构：
[1] Chongqing Univ, Sch Mech Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2000年 / 10卷 / 03期
关键词：
hypereutectic Al-Si alloy; primary Si crystals; thixoforming;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Effects of processing parameters on microstructure evolutions by mechanical stinting, procedures for obtaining thixotropy in semi-solid slurries, and procedure for thixoforging component, were investigated in hypereutectic AI-S alloy. It is shown that 605 degrees C was the proper temperature for stirring treatment of this alloy, at which the coarse and plate primary Si crystals were effectively changed to globular crystals with a mean diameter of 200 mu m after 50 min stirring, that billets with excellent thixotropy were obtained after 50 min remelting at 575 degrees C, in which solid fraction of matrix and primary Si crystals was about 60%, and that a perfect near net shape component of disc casting was obtained by thixoforging.
引用
收藏
页码：309 / 313
页数：5
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