Study of the structure and properties of Al-Cu alloys (up to 10 at.% Cu) produced at different cooling rates

Svetlana Gennadievna Menshikova, Irina Gennadievna Brodova, Tatyana Ivanovna Yablonskih, Vladimir Vladimir Astafyev

Abstract


In this study, we have used durametry, X-ray phase analysis and metallographic analysis to observe the structure and properties of Al-Cu alloys (2, 5, 7 and 10 at.% Сu) cooled down from melt, at rates of 2 and 100 degrees/s and within a temperature range 973 to 1473 К. Each sample includes two phases: α-Al and Al2Cu. The study demonstrates that a growing Cu concentration and a growing cooling rate increase the microhardness of the groundmass metal (α-Al); the dendrite parameters of α-Al and the eutectic mixture volume ratio are also changed.

 


Full Text:

PDF

References


G.E. Stroganov, High-strength aluminum alloy casting. Moscow: Metallurgy, 1985. 216 (in Russian).

H.B. Dong and P.D. Lee, Acta Mater, vol. 53, pp. 659-658, 2005.

R. Mathiesen, L. Arnberg, P. Bleuet, and A. Somogui, Metall. Mater. Trans. A., vol. 37A, pp. 2515-2524, 2006.

V. O. Esin, A. S. Krivonosova, I. Zh. Sattybaev, T. G. Fedorova, L. V. Elokhina, "The effect of pressure on the redistribution of copper in solid solution and the parameters of the dendritic structure of the alloy single crystals of Al-4% Cu in the crystallization in a weak gravitational field," Fiz. Melallov i metallovedenie, vol. 110, no. 4, pp. 349-355, 2010 (in Russian).

I. G. Brodova, P. S. Popel, N. M. Barbin, N. A. Vatolin, The Initial melt as a basis of formation of structural properties of aluminum alloys. Ykaterinburg: UrO RAS, 2005, 369 (in Russian).

I. G. Brodova, P. S. Popel and G. I. Eskin, Liquid Metal Processing: Applications to Aluminium Alloys Production. Taylor and Francis, New York, 2002. 305.

M. G. Vasin, S. G. Menshikova, M. D. Ivshin, "Theoretical description of slow non-monotonic relaxation processes in Al-Y melts," Physica A: Statistical Mechanics and its Applications, vol. 449, pp. 64-73, 2016.

S. G. Menshikova, A. L. Bel`tuykov, A. V. Mokshin, R. M. Khusnutdinov, "About viscosity of Al-Cu melts (up to 10 at.% Cu)", Phase transitions, critical and nonlinear phenomena in condensed media. Abstracts of the International Conference on the 80th anniversary of Corresponding Member of the Russian Academy of Sciences I.K. Kamilov, 2015. 48 (in Russian).

R. M. Khusnutdinov, A. V. Mokshin, S. G. Menshikova, A. L. Bel`tyukov, V. I. Lad`yanov, "Viscous and Acoustic properties of Al-Cu melts," Journal of Experimental and Theoretical Physics, vol. 122, no. 5, pp. 859-868, 2016.

D. K. Lykasov, O. A. Chikova, "The viscosity of Al-Cu liquid alloys," Rasplavy (Melts), no. 4, pp. 31-36, 2007 (in Russian).

Y. Plevachuk, V. Sklyarchuk, A. Yakamovych, S. Eckert, B. Willers, and K. Eigefeld, "Density, viscosity and Electrical Conductivity of Hypoeutectic Al-Cu Liquid Alloys," Metallurgical and Materials Transactions A, vol. 39A, pp. 3040-3045, 2008.

M. Schick, J. Brillo, I. Egry, B. Hallstedt "Viscosity of Al-Cu liquid alloys: measurement and thermodynamic description," J. Mater. Sci., vol. 47, pp. 8145-8152, 2012.

S. Ganesan, R. Speiser, and D.R. Poirier, "Viscosities of Aluminum-Rich Al-Cu Liquid Alloys", Metallurgical Transactions B, vol. 18B, pp. 421-424, 1987.

N. Yu. Konstantinova, A. R. Kurochkin, A. V. Borisenko, V. V. Filippov, P. S. Popel, "The viscosity of the aluminum-copper melts," Rasplavy (Melts), no. 2, pp. 157-163, 2016 (in Russian).

The diagrams of binary metallic systems. vol.1 / Edited N. P. Lyakishev. Moscow: Engineering, 1996, 991 (in Russian).

S. G. Menshikova, I. G. Shirinkina, I. G. Brodova, V. I. Ladyanov, A.A. Suslov, "Investigation of the structure and properties of aluminum alloys and copper obtained in a superfast cooling of melts," Metallovedenie i termicheskaya obrabotka metallov, 2017 (accepted for publication).


Refbacks

  • There are currently no refbacks.


MAYFEB Journal of Materials Science
MAYFEB TECHNOLOGY DEVELOPMENT
Toronto, Ontario, Canada
ISSN 2371-8722