微重力电磁模拟过偏晶Cu-Pb合金的凝固

郝维新; 杨根仓; 谢辉; 达道安; 王小勇

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微重力电磁模拟过偏晶Cu-Pb合金的凝固
Solidification Simulation of Cu-40Pb Hypermonotectic Alloy in Microgravity Electromagnetic Condition
2004年第3期页码：22-23
纸质出版日期： 2004 ，
DOI：

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[1]郝维新,杨根仓,谢辉,达道安,王小勇.微重力电磁模拟过偏晶Cu-Pb合金的凝固[J].特种铸造及有色合金,2004(03):22-23+74.

Hao Weixin Yang Gencang Xie Hui. Solidification Simulation of Cu-40Pb Hypermonotectic Alloy in Microgravity Electromagnetic Condition[J]. Special Casting & Nonferrous Alloys, 2004,(3):22-23.
[1]郝维新,杨根仓,谢辉,达道安,王小勇.微重力电磁模拟过偏晶Cu-Pb合金的凝固[J].特种铸造及有色合金,2004(03):22-23+74. DOI：

Hao Weixin Yang Gencang Xie Hui. Solidification Simulation of Cu-40Pb Hypermonotectic Alloy in Microgravity Electromagnetic Condition[J]. Special Casting & Nonferrous Alloys, 2004,(3):22-23. DOI：

摘要

利用微重力电磁模拟的方法

对过偏晶Cu 40Pb合金熔体的凝固进行了试验研究。研究表明 :在模拟微重力的环境下

施加的电磁力可使合金熔体在不混溶区内获得准失重状态

抑制了合金熔体中L2 （Pb）相产生的Stockes沉积效应

在凝固组织中得到熟化后粗大的α（Cu）枝晶

S（Pb）相分布在α（Cu）枝晶间

从而消除了该合金在凝固过程中出现的重力偏析现象。

Abstract

The solidification simulation of Cu-40Pb hypermonotectic alloy has been carried out in microgravity elctromagnetic condition. The results showed that the Stockes deposition effects produced by L

（Pb） phase can be restrained so that coarse α（Cu） dendrite after aging Pb phase distributed between α（Cu） dendrites can be obtained in solidified structure due to liquid alloy being in quasi-zero gravity in the immiscible interval when applying electromagnetic force under the circumstance of simulated microgravity. Subsequently

the specific gravity segregation during solidification process was eliminated.