STUDY ON MICROSTRUCTURE SIMULATION OF ZL114A ALLOY DURING LOW PRESSURE DIE CASTING PROCESS

Acta Metall Sin

2008, Vol. 44

Issue (2): 243-248 DOI:

Research Articles

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STUDY ON MICROSTRUCTURE SIMULATION OF ZL114A ALLOY DURING LOW PRESSURE DIE CASTING PROCESS

Bin Li;;;Baicheng LIU;;;

清华大学机械系

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Bin Li; Baicheng LIU. STUDY ON MICROSTRUCTURE SIMULATION OF ZL114A ALLOY DURING LOW PRESSURE DIE CASTING PROCESS. Acta Metall Sin, 2008, 44(2): 243-248 .

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Abstract A nucleation model based on the statistical analysis of a number of experimental data was developed and the related thermodynamics and kinetics parameters were presented for low pressure die casting of ZL114A alloy. A modified CA-FD method was proposed to simulate macro solidification process and microstructure evolution of the alloy. The preferential growth orientation, the solute redistribution in both liquid and solid, the solid/liquid interface curvature and the growth anisotropy were all considered in the model. The grain size, secondary dendrite arm spacing and eutectic content volume fraction of the alloy at different cooling rate were predicted and compared with experimental results of step-shaped sample casting.

Key words: aluminum alloy low pressure die casting microstructure numerical simulation nucleation model

Received: 18 April 2007

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2008/V44/I2/243

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