Application of electromagnetic separation of phases in alloy melt to produce in-situ surface and functionally gradient composites

被引：11

作者：

Xu, ZM ^{[1
]}

Li, TX

Zhou, YH

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China

[2] Shanghai Jiao Tong Univ, State Key Lab MMCs, Shanghai 200030, Peoples R China

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2003年 / 34A卷 / 08期

关键词：

D O I：

10.1007/s11661-003-0315-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The principle of electromagnetic separation of phases (primary phase) in alloy melt is that the electromagnetic force scarcely acts on the primary I phases due to its low electric conductivity as compared to the melt. As a result, a repulsive force acts on the primary iron-rich phases to push them to move in the direction opposite to that of the electromagnetic force. The in-situ surface composite and the functionally gradient composite reinforced by primary Si are produced when the hypereutectic Al-Si alloy solidifies under electromagnetic force induced by static magnetic field and DC current. Similarly, the Al-Si-1.20 pct Fe-1.60 pct Mn alloy in-situ surface composite reinforced by primary iron-rich phase is produced. Based on this, a new method for production of in-situ multigradient composite with several layers, by electromagnetic separation of phases and directional solidification technique, is proposed.

引用

页码：1719 / 1725

页数：7