Li, Qiang and Yu, Baoyi and Zhang, Huawen and Li, Runxia and Wang, Feng and Xie, Shuisheng and Huang, Guojie and Wang, Hao (2010) Cellular automaton modeling of semisolid microstructure formation. China Foundry, 7 (2). pp. 143-148. ISSN 1672-6421
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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 mCA 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.
|Item Type:||Article (Commonwealth Reporting Category C)|
|Additional Information:||Copyright Foundry Journal Agency.|
|Uncontrolled Keywords:||semi-solid metal processing; microstructure modeling; modified cellular automaton; A356 Al alloy|
|Fields of Research (FOR2008):||09 Engineering > 0912 Materials Engineering > 091207 Metals and Alloy Materials|
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
09 Engineering > 0915 Interdisciplinary Engineering > 091502 Computational Heat Transfer
|Socio-Economic Objective (SEO2008):||E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering|
|Deposited On:||03 Apr 2011 15:08|
|Last Modified:||31 Jul 2012 10:10|
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