TECHNOLOGICAL AND METHODOLOGICAL FEATURES OF EXPERIMENTAL ALUMINUM ALLOYS PREPARATION AND MODIFICATION

Authors

DOI:

https://doi.org/10.15407/plit2025.02.020

Keywords:

aluminum alloys, melt preparation, modification, phase formation, new casting materials

Abstract

The manuscript considers some important theoretical information and practical methods for obtaining experimental aluminum alloys. Examples of recent trends in the development of lightweight aluminum alloys with a high content of magnesium and lithium are shown. In conditions of industrial preparation, it is necessary to use special fluxes, the simplest of which is a mixture of NaCl and KCl in equal proportions, or with the addition of 10% NaF or cryolite Na3AlF6. Such fluxes are widely used and they can effectively refine and protect the melts of most aluminum alloys, in particular those containing up to 5 wt.% of magnesium. For the strongest protection of the melt surface and for alloys containing an increased amount of magnesium and lithium, it is advisable to use mixtures of LiF and LiCl or KCl and LiCl in approximately equal proportions. Another important aspect of obtaining experimental aluminum alloys is their multicomponent modification. Experience in implementing such solutions shows the advantage of using binary single-component rapidly crystallized master alloys. A particularly strong effect is observed for systems of the Al-V and Al-Mo type, in which modifying intermetallic phases can be in a non-equilibrium state. After adding into aluminum melts, they are prone to rapid dissolution and effective absorption. Using the Al-12Ti-8Zr addition, for example, shows that the use of complex multicomponent master alloys can be ineffective. The intermetallics in them are complex, poorly soluble, and have predominantly large sizes. Their dissolution in aluminum alloys with a significant silicon content can be incomplete due to the formation of silicide layers. By using the example of the experimental Al-5Ni-12La casting alloy with nanoscale fibrous eutectic, it is shown that the formation of the structure cannot always be predicted by using the phase diagram. It is shown that the intermetallic eutectic components of Al3Ni manage to grow with slight overheating of the melt, in contrast to the higher-temperature Al3La11 phase. This effect is associated with a much higher diffusion coefficient of nickel in aluminum. To level out the uneven phase formation, it is necessary to increase the superheat of the melt. 

Author Biographies

M.M. Voron, Physico-technological Institute of Metals and Alloys of the National Academy of Sciences of Ukraine (Kyiv, Ukraine)

PhD., senior research scientist

D.O. Remizov, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” (Kyiv, Ukraine)

PhD., chief of laboratory

B. V. Kyvhylo, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” (Kyiv, Ukraine)

chief of laboratory

О.V. Kryvyk, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” (Kyiv, Ukraine)

chief of laboratory

K.A. Barantsev, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” (Kyiv, Ukraine)

chief of laboratory

References

Milani, V., & Timelli, G. (2023). Solid Salt Fluxes for Molten Aluminum Processing – A Review. Metals, 13(5), 832. https://doi.org/10.3390/met13050832

Varshney, D. & Kumar, K. (2021). Application and use of different aluminium alloys with respect to workability, strength and welding parameter optimization. Ain Shams Engineering Journal. 12(1), 1143-1152. https://doi.org/10.1016/j.asej.2020.05.013

Green J.A. (2007). Aluminum Recycling and Processing for Energy Conservation and Sustainability. ASM International. Materials Park, Ohio, USA. P. 198.

Awe S., Seifeddine S., Jarfors A., Lee Y. & Dahle, A. (2017). Development of new Al-Cu-Si alloys for high temperature performance. Advanced Materials Letters, 8 (6), 695-701. https://doi.org/10.5185/amlett.2017.1471

Pantelakis Sp. et al. (1999). Creep resistance of aluminium alloys for next generation supersonic civil transport aircrafts. Theoretical and applied fracture mechanics, 31(1), 31-39. https://doi.org/10.1016/S0167-8442(98)00064-0

Molina R., Amalberto P. & Rosso M. (2011). Mechanical characterization of aluminium alloys for high temperature applications. Part 1: Al-Si-Cu alloys. Metallurgical science and technology, Vol. 29–1, 5–15.

Molina R., Amalberto P. & Rosso M. (2011). Mechanical characterization of aluminium alloys for high temperature applications. Part 2: Al-Si-Cu alloys. Metallurgical science and technology, Vol. 29-2, 5-13

Vojtech D. (2010). Challenges for research and development of new aluminium alloys. METALURGIJA, 49 (3), pp. 181-185.

Shaha S.K., Czerwinski F., Kaspzak W., Friedman J. & Chen D.L. (2015). Microstructure and mechanical properties of Al–Si cast alloy with additions of Zr-V-Ti. Materials & Design, 83, 801-812. https://doi.org/10.1016/j.matdes.2015.05.057

Pietrowski S. & Szymczak T. (2010) Crystallization, microstructure and mechanical properties of silumins with micro-additions of Cr, Mo, W and V. Archives of Foundry Engineering, 10(2), 123-136.

Szymczak, T., Gumienny, G. Klimek L., Goly M. & Pacyniak T. (2020), Microstructural Characteristics of AlSi9Cu3(Fe) Alloy with High Melting Point Elements. Metalls. 10, 1278. https://doi:10.3390/met10101278

Wang, F., Wang, X., & Cui, J. (2019). Micro-Structure and Mechanical Properties of 2A97 Al-Li Alloy Cast by Low-Frequency Electromagnetic Casting. Metals, 9(8), 822. https://doi.org/10.3390/met9080822

Wu, M., Xiao, D., Liu, W., & Huang, L. (2022). Microstructure, Mechanical Properties, and Corrosion Behavior of Al-4.0Cu-1.1Li-0.5Mg-xAg Alloys. Metals, 12(3), 374. https://doi.org/10.3390/met12030374

ud Din, S., Bin Awais, H., ul Haq Tariq, N. & Mehmood, M. (2014). Effect of Li addition on microstructure and mechanical properties of Al – Mg – Si alloy. International Journal of Materials Research, 105(8), 770-777. https://doi.org/10.3139/146.111089

Smirnov O. M., Skorobagatko Yu. P., Goryuk M. S., Voron M. M., Semenko A. Yu., Hoida D. I. & Semiryagin S. V. (2023). Influence of Combined Vibration with Cavitation and Electromagnetic Impact on the Cast Aluminium Alloy Grain Refining, Metallofiz. Noveishie Tekhnol., 45(7), 883-900 https://doi.org/10.15407/mfint.45.07.0883

Broström M., Enestam S., Backman R. & Mäkelä K. (2013). Condensation in the KCl–NaCl system. Fuel Processing Technology, 105, 142-148. https://doi.org/10.1016/j.fuproc.2011.08.006

Balart, M. J., Patel, J. B., & Fan, Z. (2016). Melt Protection of Mg-Al Based Alloys. Metals, 6(6), 131. https://doi.org/10.3390/met6060131

Utigard T.A., Roy R. R., Friesen K. Properties of fluxes used in molten aluminium processing. High Temperature Materials and Processes. 2001. 20(3–4). doi:10.1515/HTMP.2001.20.3–4.303.

Milani, V., & Timelli, G. (2023). Solid Salt Fluxes for Molten Aluminum Processing – A Review. Metals, 13(5), 832. https://doi.org/10.3390/met13050832

Zhang, M. L., Yan, Y. D., Hou, Z. Y., Fan, L. A., Chen, Z., & Tang, D. X. (2007). An electrochemical method for the preparation of Mg-Li alloys at low temperature molten salt system. Journal of Alloys and Compounds, 440(1–2), 362–366. https://doi.org/10.1016/j.jallcom.2006.09.056

Massalski T.B., Okamoto H., Subramanian P.R. & Kacprzak L. (1990). Phase Diagrams for Binary Alloys Second Edition, Vol. 1, ASM International, Materials Park, Ohio, USA. 3589 P.

Williams D. F., Toth L. M. & Clarno K. T. (2006). Assessment of candidate molten salt coolants for the advanced high-temperature reactor (AHTR) Tennessee: Oak Ridge, P. 69.

Ivanchenko D. V. & Yamshinskiy М. М. (2024). Zirconium tetrafluoride as a hardener for aluminum and aluminum-based alloys. Casting processes, 2, 3-10. https://doi.org/10.15407/plit2024.02.003 [In Ukrainian].

Voron M. M., Polyvoda S. L., Fon-Pruss M. A. & Matviets E. O. (2021). Production and study of the structure and efficiency of the complex Al-12Ti-8Zr master alloy. Metal and casting of Ukraine, 2, 30-35 https://doi.org/10.15407/steelcast2021.02.030 [In Ukrainian].

Likhatsky I. F., Voron M. M. & Mykhalenkov K. V. (2020). World experience of aluminum master alloys application and advanced Ukrainian developments in this field. Metal and Casting of Ukraine, 4, 63-68. https://doi.org/10.15407/steelcast2020.04.063 [In Ukrainian].

Voron M. M. & Fon Pruss M. A. (2021). Features of Al-10Mo electron-beam produced master-alloy assimilation in liquid aluminum and AlSi9Cu3 alloy. Metal science & treatment of metals, 3, 49-56. https://doi.org/10.15407/mom2021.03.049 [In Ukrainian].

Voron М. М. (2021). Influence of magnesium on high-temperature structural-phase stability of Al-Ni-La system alloys. Metal science & treatment of metals, 2, 38–46 https://doi.org/10.15407/mom2021.02.038 [In Ukrainian].

Voron М. М. & Solovey М.О. (2024) Development of creep-resistant casting alloys based on the Al-Fe-Mn-Ni system. Metal science & treatment of metals, 2, 49-58. https://doi.org/10.15407/mom2024.02.049 [In Ukrainian].

Raghavan V. (2006). Al–La–Ni (Aluminum-Lanthanum-Nickel)/ Journal of Phase Equilibria and Diffusion, 27(4), 392. https://doi.org/10.1361/154770306X116333

Czerwinski F. (2020). Thermal Stability of Aluminum Alloys – A Review. Materials. Vol. 13 (15), 1–49. https://doi.org/10.3390/ma13153441

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Published

31-05-2025

How to Cite

Voron М. ., Remizov Д. ., Kyvhylo Б. ., Kryvyk О. ., & Barantsev К. . (2025). TECHNOLOGICAL AND METHODOLOGICAL FEATURES OF EXPERIMENTAL ALUMINUM ALLOYS PREPARATION AND MODIFICATION. Casting Processes, 160(2), 20–31. https://doi.org/10.15407/plit2025.02.020

Issue

Casting processes №2 (160) 2025

Section

PRODUCTION AND TREATMENT OF MELTS

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Copyright (c) 2025 М.М. Ворон, Д.О. Ремізов, Б.В. Кивгило, О.В. Кривик, К.А. Баранцев

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