Effect of mould D/H ratio on solidification structure of Al-2.0%Si alloy ingot under ultrasonic vibration

被引：2
|
作者：
Li, J. W. [1 ]
Fu, Y. [1 ]
Momono, T. [2 ]
Tayu, Y. [2 ]
机构：
[1] Liaoning Univ Technol, Coll Mat Sci & Engn, Jinzhou 121001, Peoples R China
[2] Muroran Inst Technol, Fac Mat Sci & Engn, Muroran, Hokkaido 0508385, Japan
来源：
MATERIALS TECHNOLOGY | 2009年 / 24卷 / 04期
关键词：
Mould D/H ratio; Ultrasonic vibration; Al-2.0Si%Si alloy; Ingot; Equiaxed grain occupancy; ALUMINUM A356 ALLOY; POWER;
D O I：
10.1179/175355509X387129
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of experiments were conducted by Al-2.0Si%Si alloy to investigate the effect of mould D/H ratio and shape on solidification structure under ultrasonic vibration (UV). Finally, the mechanism of grain refining was discussed. The results show that equiaxed grain occupancy is maximized when D/H is equal to 0.7 for ingots with mould volume of 80 and 120 cm(3), however, the equiaxed grain occupancy has the maximum when D/H is equal to 2.0 for the ingot with mould volume of 200 cm(3). Otherwise, the equiaxed grain occupancy has downtrend with increasing of mould volume. The columnar structure is easily formed in ultrasonic ingots with complex mould shape and more corners.
引用
收藏
页码：240 / 243
页数：4
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