Size distribution of nucleation substrates for Al-Cu alloy: Theoretical calculation and simulation of crystalization process

Size distribution of nucleation substrates for Al-Cu alloy: Theoretical calculation and simulation of crystalization process

Janusz Lelito Beata Gracz Pawel L. Zak Michat Szucki Pawet Malinowski Józef Sz. Suchy 

AGH University of Science and Technology, Faculty of Foundry Engineering, Department of Foundry Processes Engineering, 23 Reymonta Street, Krakow, 30-059, Poland

Page: 
87-94
|
DOI: 
https://doi.org/10.3166/acsm.40.87-94
Received: 
1 October 2015
|
Accepted: 
7 January 2016
|
Published: 
11 May 2016
| Citation

OPEN ACCESS

Abstract: 

The free-growth model was introduced by Greer et al. in 2000. This model bases on hypothetical size distribution of nucleation substrates. The aim of this work is to develop a log-normal distribution of heterogeneous nucleation substrates for the Al-Cu alloy. The computational algorithm allowing to restore the nucleation substrates distribution was created. The input data for algorithm, that is grains density of aluminum primary phase and supercooling, were taken from literature. These data are important for inverse modelling which is based on the numerical optimization methods that allows to identify parameters of substrate distribution. The distribution described in this way may be then applied in simulation based on the free-growth model. Numerical simulations based on the free-growth model can predict the grains density of the examined Al-Cu alloy. These predictions are compared with the experimental data.

1. Introduction
2. RESEARCH METHODOLOGY
3. COMPUTATIONAL ALGORITHM
4. Results
5. Conclusion
Acknowledgement

The authors acknowledge financial support from the statcment contract no. 11.11 .170 .318 task 1 (Faculty of Foundry Enginecring. AGH).

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