Modeling of Non-isothermal Dendrite Growth in Pb-Sn Alloy

Hao Limei1; Chen Zhi2

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Modeling of Non-isothermal Dendrite Growth in Pb-Sn Alloy
Issue 5, Pages: 353-356(2008)
Published： 2008 ，
DOI：

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[1]郝丽梅,陈志.非等温Pb-Sn合金枝晶生长的数值模拟[J].特种铸造及有色合金,2008(05):353-356+325.

Hao Limei1, Chen Zhi2. Modeling of Non-isothermal Dendrite Growth in Pb-Sn Alloy. [J]. Special Casting & Nonferrous Alloys (5):353-356(2008)
[1]郝丽梅,陈志.非等温Pb-Sn合金枝晶生长的数值模拟[J].特种铸造及有色合金,2008(05):353-356+325. DOI：

Hao Limei1, Chen Zhi2. Modeling of Non-isothermal Dendrite Growth in Pb-Sn Alloy. [J]. Special Casting & Nonferrous Alloys (5):353-356(2008) DOI：

摘要

基于相场法

对二元合金的非等温枝晶生长形貌进行了模拟。以铅锡（Pb-Sn）合金为研究对象

展示了枝晶界面形貌的演化过程

研究了它受相场参数的影响规律。结果表明

过冷度、耦合参数和各向异性参数等均对枝晶形貌有影响;引入反溶质截流（ATC）可以有效抑制溶质截流小包和侧边枝的出现;讨论了各向异性参数和枝晶尖端速度的关系。

Abstract

The modeling of non-isothermal dendrite growth in Pb-Sn alloy was conducted based on the phase field method to visualize the evolution of interface morphology of dendrite and to examine the effects of phase parameters on it. The results indicate that the dendrite mosphology is dependent on the under-cooled degree

coupled parameters and anisotropy value. The trapped melt packets and side branches can be greatly suppressed by an anti-trapping current. Furthermore

the relationship between anisotropy and dendrite tip velocity was described.