Abstract
The solidification behavior of Al65Cu20Co15 and Al65Cu15Co20 alloys was studied by means of scanning electron microscopy, energy-dispersive x-ray analysis, powder x-ray diffraction, and differential thermal analysis. Slowly cooled as well as rapidly cooled ingots of both alloys contained a decagonal quasicrystalline phase as dominant phase with additions of several minor normal-crystalline phases. The decagonal phase was found to solidify in a temperature range limited by two peritectic reactions involving phases of CsCl-type structure. Formation of AlCu and Al2Cu phases was also observed.
Similar content being viewed by others
References
A-P. Tsai, A. Inoue, and T. Masumoto, Mater. Trans. JIM 30, 463 (1989).
A. R. Kortan, F. A. Thiel, H. S. Chen, A. P. Tsai, A. Inoue, and T. Masumoto, Phys. Rev. B40, 9397 (1989).
L. X. He, Y. K. Wu, and K. H. Kuo, J. Mater. Sci. Lett. 7, 1284 (1988).
E. G. McRae, R. A. Malic, T.H. Lalonde, F. A. Thiel, H. S. Chen, and A. R. Kortan, Phys. Rev. Lett. 65, 883 (1990).
P. Launois, M. Audier, F. Dénoyer, C. Dong, J. M. Dubois, and M. Lambert, Europhys. Lett. 13, 629 (1990).
T. L. Daulton and K. F. Kelton, Philos. Mag. Lett. 63, 257 (1991).
R. V. Skolozdra, A. P. Prevarskii, and E. E. Cherkashin, in Diagrammi Sostoiania Metallicheskich Sistem, edited by N. V. Ageev (“Nauka”, Moscow, 1971) (in Russian).
Binary Alloy Phase Diagrams, edited by T. B. Massalski (ASM, Metals Park, OH, 1986).
N. Ridley, J. Inst. Met. 94, 255 (1966).
L. X. He, X. Z. Li, Z. Zhang, and K. H. Kuo, Phys. Rev. Lett. 61, 1116 (1988).
B. Grushko, R. Wittmann, and K. Urban, unpublished research.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Grushko, B., Urban, K. Solidification of Al65Cu20Co15 and Al65Cu15Co20 alloys. Journal of Materials Research 6, 2629–2636 (1991). https://doi.org/10.1557/JMR.1991.2629
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/JMR.1991.2629