复合添加Sc、Zr的Al-Zn-Mg-Cu合金挤压铸造数值模拟

徐蕾; 张志峰; 徐骏; 李豹; 王志刚

doi:10.15980/j.tzzz.2014.04.024

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复合添加Sc、Zr的Al-Zn-Mg-Cu合金挤压铸造数值模拟
Numerical Simulation of Direct Squeeze Casting Al-Zn-Mg-Cu Alloy Containing Sc and Zr
2014年34卷第4期页码：397-400
纸质出版日期： 2014 ，
DOI： 10.15980/j.tzzz.2014.04.024

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[1]徐蕾,张志峰,徐骏,李豹,王志刚.复合添加Sc、Zr的Al-Zn-Mg-Cu合金挤压铸造数值模拟[J].特种铸造及有色合金,2014,34(04):397-400.

Xu Lei, Zhang Zhifeng, Xu Jun, et al. Numerical Simulation of Direct Squeeze Casting Al-Zn-Mg-Cu Alloy Containing Sc and Zr[J]. Special Casting & Nonferrous Alloys, 2014,34(4):397-400.
[1]徐蕾,张志峰,徐骏,李豹,王志刚.复合添加Sc、Zr的Al-Zn-Mg-Cu合金挤压铸造数值模拟[J].特种铸造及有色合金,2014,34(04):397-400. DOI： 10.15980/j.tzzz.2014.04.024.

Xu Lei, Zhang Zhifeng, Xu Jun, et al. Numerical Simulation of Direct Squeeze Casting Al-Zn-Mg-Cu Alloy Containing Sc and Zr[J]. Special Casting & Nonferrous Alloys, 2014,34(4):397-400. DOI： 10.15980/j.tzzz.2014.04.024.

摘要

利用ProCAST软件对复合添加微量Sc、Zr元素的Al-Zn-Mg-Cu合金进行了挤压铸造数值模拟研究

考察了该合金的成形性能。结果表明

充型过程中

壁厚不同部位液体充填速度也不同

壁厚越大

充填速度越快;充填不平稳

容易在液流交汇处产生夹杂、卷气等缺陷

改进工艺可获得无夹杂、卷气缺陷的零件。

Abstract

Numerical simulation of direct squeeze casting Al-Zn-Mg-Cu alloy with compound trace Sc、Zr addition was conducted with the help of the ProcCAST software to understand the formability of the alloy in a special design mold.The simulated results reveal that during filling process

different filling velocity can be observed at different thick location

where with increasing in thickness

the filling velocity is accelerated.The inclusion and entrapped-gas easily occurs in convergence of liquid metal as a result of un-stable filling.Through modifying design

the squeezing casting parts with inclusion-free and entrapment-gas free can be produced.