Predicting gas and shrinkage porosity in solidification microstructure:A coupled three-dimensional cellular automaton model

被引：4
|
作者：
Cheng Gu [1 ]
Colin D.Ridgeway [1 ]
Emre Cinkilic [1 ]
Yan Lu [1 ]
Alan A.Luo [1 ,2 ]
机构：
[1] Department of Materials Science and Engineering, The Ohio State University
[2] Department of Integrated Systems Engineering, The Ohio State University
来源：
JournalofMaterialsScience&Technology | 2020年 / 49卷 / 14期
基金：
美国国家科学基金会;
关键词：
D O I：
暂无
中图分类号：
TG245 [铸件缺陷及其预防];
学科分类号：
080201 ; 080503 ;
摘要：
Porosity formation during solidification of aluminum-based alloys, due to hydrogen gas and alloy shrinkage, has been a major issue adversely affecting the performance of solidification products such as castings,welds or additively manufactured components. A three-dimensional cellular automaton(CA) model has been developed, for the first time, to couple the predictions of hydrogen-induced gas porosity and shrinkage porosity during solidification microstructure evolution of a binary Al-Si alloy. The CA simulation results are validated under various cooling rates by porosity measurements in an experimental wedge die casting using X-ray micro computed tomography(XMCT) technique. This validated porosity moel provides a critical link in integrated computation materials engineering(ICME) design and manufacturing of solidification products.
引用
收藏
页码：91 / 105
页数：15
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