Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第11卷    第z2期    总第100期    2001年11月

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文章编号:1004-0609(2001)S2-0226-04
A356铝合金显微疏松与二次枝晶臂距的计算机模拟
杜  强, 王利明, 韩维新, 李殿中, 李依依

(中国科学院 金属研究所, 沈阳 110015)

摘 要: 以商品化软件PROCAST为基础进行二次开发,对A356铝合金托盘件凝固过程显微疏松缺陷和二次臂距(SDAS)进行了数值分析,建立了有氢气析出量影响在内的显微疏松判据模型,预测了显微疏松出现的位置与体积分数。预测结果得到了X射线无损探伤实验的验证。开发了温度场测试系统,测试了铸件凝固过程的冷却曲线,模拟结果与实际结果符合良好。

 

关键字:   显微疏松; 二次臂距; 凝固模拟

Quantitative prediction of microporosity and
secondary dendritic arm spacing in A356 alloys
DU Qiang, WANG Li-ming, HAN Wei-xin, LI Dian-zhong, LI Yi-yi

Institute of Metal Research, Chinese Academy of Sciences,
Shenyang 110015, P.R.China

Abstract:Based on commercial software of PROCAST, the micro-porosity and SDAS of A356 plate casting were analyzed numerically during solidification process. The module for predicting the location and the percentage of micro-porosity was developed. In the module, a critical function which considers the effect of the hydrogen content is adopted. The simulated result of micro-porosity -agrees-well with the X-ray non-destruction test. The temperature measuring system is developed, and the measured cooling curves in different positions of the plate casting also match well with the simulated.

 

Key words: micro-porosity; SDAS; solidification simulation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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