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Cellular automaton modeling of semisolid microstructure formation |
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| Authors: | Li Qiang Yu Baoyi Zhang Huawen Li Runxia Wang Feng Xie Shuisheng Huang Guojie Wang Hao |
| Affiliation: | 1. School of Material Science and Engineering, Shenyang University of Technology, Shenyang 110870, China;State Key Laboratory for Fabrication and Processing of Non-ferrous Metals, Beijing General Research Institute for Non-ferrous Metals, Beijing 100088,China 2. School of Material Science and Engineering, Shenyang University of Technology, Shenyang 110870, China 3. State Key Laboratory for Fabrication and Processing of Non-ferrous Metals, Beijing General Research Institute for Non-ferrous Metals, Beijing 100088,China 4. Faculty of Surveying and Engineering, University of Southern Queensland, Queensland, Australia, 4350 |
| Abstract: | Computer modeling of semi-solid structure formation is of significance in both understanding the mechanisms of globular structure formation and determining the effect of solidification conditions on final microstructure. A modified cellular automaton (mCA) model has been developed, which is coupled with macroscopic models for heat transfer calculation and microscopic models for nucleation and grain growth. The InCA model is applied to A356 Al alloy - one of the most widely used semi-solid alloys, to predict grain morphology and grain size during semi-solid solidification, and determines the effects of pouring temperature on the final microstructure. The modeling results show that the lower the initial temperature, the finer grain size will be obtained. In addition, the model can be used to predict the solutal micro-segregation. |
| Keywords: | semi-solid metal processing microstructure modeling modified cellular automaton A356 Al alloy |
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