Cellular Automaton Finite Element Method Applied for Microstructure Prediction of Aluminium Casting Treated by Laser Beam

• Autorzy: Hajkowski J. , Popielarski P. , Ignaszak Z.

Identyfikatory

DOI

10.24425/afe.2019.129620

• Języki publikacji: EN

Abstrakty

EN

What is the limit of improvement the structure obtained directly from the liquid state, with possible heat treatment (supersaturation and aging)? This question was posed by casting engineers who put arbitrary requirements on reducing the DAS (Dendrite Arm Spacing) length to less than a dozen microns. The results of tests related to modification of the surface microstructure of AlSi7Mg alloy casting treated by laser beam and the rapid remelting and solidification of the superficial casting zone, were presented in the paper. The local properties of the surface treated with a laser beam concerns only a thickness ranging from a fraction to a single mm. These local properties should be considered in the aspect of application on surfaces of non-machined castings. Then the excellent surface layer properties can be used. The tests were carried out on the surface of the casting, the surface layer obtained in contact with the metal mould, after the initial machining (several mm), was treated by the laser beam. It turned out that the refinement of the microstructure measured with the DAS value is not available in a different way, i.e. directly by casting. The experimental-simulation validation using the Calcosoft CAFE (Cellular Automaton Finite Element) code was applied.

Słowa kluczowe

EN

microstructure alloys prediction; aluminium alloys; remelting by laser beam; tribology; finite element method applied; cellular automaton; dendrite arm spacing

PL

prognoza mikrostruktury stopów; stopy aluminium; przetapianie wiązką laserową; trybologia; zastosowanie metody elementów skończonych

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2019
• Tom: iss. 3
• Strony: 111--118
• Opis fizyczny: Bibliogr. 9 poz., fot., rys., tab., wykr.

Twórcy

autor

Hajkowski J.

• Poznan University of Technology, CAD/CAE of Material Technology and Foundry Laboratory, Poznan, Poland

autor

Popielarski P.

• Poznan University of Technology, CAD/CAE of Material Technology and Foundry Laboratory, Poznan, Poland

autor

Ignaszak Z.

• Poznan University of Technology, CAD/CAE of Material Technology and Foundry Laboratory, Poznan, Poland

Bibliografia

• [1] Campbell, J. (2015). Complete Casting Handbook. 2nd Edition., Butterworth-Heinemann.
• [2] Borowski, J. & Bartkowiak, K. (2010). Investigation of the influence of laser treatment parameters on the properties of the surface layer of aluminium alloys. Physics Procedia. 5, 449-456. DOI 10.1016/j.phpro.2010.08.167.
• [3] Opiekun, Z. & Orłowicz, W. (1996). Laser modification of aluminium alloys surface. Solidification of Metals and Alloys. 28, 135-143. (in Polish).
• [4] Konovalov, S., Gromov, V., Zaguliyaev, D., Ivanov, Y., Semin, A., Rubannikova, J. (2019). Dispersion of Al-Si Alloy Structure by Intensive Pulsed Electron Beam. Archives of Foundry Engineering. 19(2), 79-84.
• [5] Lopez-Botello, O., Martinez-Hernandez, U., Ramírez J., Pinna, Ch., & Mumtaz, K. (2017). Two-dimensional simulation of grain structure growth within selective laser melted AA-2024. Materials and Design. 113, 369-376. DOI 10.1016/j.matdes.2016.10.031.
• [6] Gandin, Ch.-A. & Rappaz, M. (1994). A Couplet Finite Element-Cellular Automaton Model for the Prediction of Dendritic Grain Structures in Solidification Processes. Acta Metallurgica et Materialia. 42, 2233-2246.
• [7] Liu, D.R., Mangelinck-Noe, N., Gandin, Ch.-A., Zimmermann, G., Sturz, L., Nguyen-Thi, H. & Billia, B. (2015). Simulation of directional solidification of refined Al–7 wt.%Si alloys – Comparison with benchmark microgravity experiments. Acta Materialia. 93, 24-37. DOI 10.1016/j.actamat.2015.03.058.
• [8] Carozzani, T., Digonnet, H., Bellet, M., & Gandin, Ch.-A. (2012). 3D CAFE simulation of a macrosegregation benchmark experiment. IOP Conference Series: Materials Science and Engineering, 33.
• [9] Jin-long, Wang, Fu-ming, Wang, Yan-yu, Zhao, Jiong-ming & Zhang, Wei Ren (2009). Numerical simulation of 3D-microstructures in solidification processes based on the CAFE method. International Journal of Minerals, Metallurgy and Materials. 16(6), 640-645. DOI 10.1016/S1674-4799(10)60005-2.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).