The crystal-geometric factors in Laves phases

A.A. Klopotov, A.I. Potekaev, M.A. Perepelkin, N.O. Solonitsina, V.D. Klopotov, E.V. Kozlov


The crystal-geometric analysis of Laves phases of the A2B was carried out. The role of the ratio of atomic radii in the formation of stable superstructures was considered. It is established that the alloys with the Laves phases C14 have a high fill factor of space, which greatly exceeds the packing factor equal to 0.74 for pure metals with the hcp lattice. It is shown that the most numerous group includes alloys, which has a linear relation between the coefficients of space-filling and superstructure contraction.

References (15)

Laves F. Crystal structure and atomic sizes // Theory ofphases in alloys. – М.: “Metallurgiya”, 1961. – P.111-199.(in Rissian)
Pearson W. B. A handbook of lattice Spacing andStructures of Metals and Alloys. – London, New York:Pergamon Press, 1958. – 1300 р.
Villars P., Calvert L.D. Pearson’s handbook ofcrystallographic data for intermetallic phases, 2nd ed.Materials Park, OH: ASM; 1991.
Ansara I., Chart T. G, Fernandez Guillermet A., Hayes F.H, Kattner U. R, Pettifor D. G, Saunders N., Zeng K. //Calphad. – 1997, V.21. – P.171.
Barrett Ch. S., Masal’sky T. B. Structure of metals. P.1. М.:“Metallurgiya”. – 1984. – 352 p. (in Russian)
Pirson W. Crystal chemistry and physics of metals andalloys. - М.: “Mir”, 1977. – P.1. – 420 p.
Potekaev A. I., Klopotov A. A. at al. Weakly stable andpretransitional structures in TiNi alloy. Tomsk: STL, 2004. - 296 p. (in Russian)
Kozlov E. V., Dementiev V. M., Kormin N. M., Stern D.M. Structure and stability of ordered phases. - Tomsk:TSU, 1994. – 247 p. (in Russian)
Ageev N. V. Chemistry of metal alloys. – М.: Academy ofSciences of USSR, 1941. – 120 p. (in Russian)
Klopotov A. A., Solonitsina N. O., Kozlov E. V.,Superstructure В19. The crystal geometry andmechanisms of formation // Proceedings of the RussianAcademy of Sciences. Ser. Phys., 2005. – V. 69, №4. – P.562-565. (in Russian)
Kozlov E. V., Klopotov A. A., Taylashev A. S., SolonitsinaN. O. Ni-Al System. The crystal-geometric features //Proceedings of the Russian Academy of Sciences. Ser.Phys., 2006. – V. 70, №7. – P. 980-983. (in Russian)
Klopotov. A. A., Kozlov E. V. at al. The size crystalgeometry of intermetallics binary alloys // “IzvestiaVuzov. Fizika”, – 2006. – №1. – P. 34-43. (in Russian)
Klopotov A. A., Kozlov E. V., Solonitsina N. O., TaylashevA. S. Superstructure В2. Packing density and electronconcentration // Fundamental problems of contemporarymaterial science, 2005. – №3. – P.51-57. (in Russian)
Kozlov E. V., Klopotov A. A., Taylashev A. S., SolonitsinaN. O. Size effects in classic intermetallics // The orderingin metals and alloys, IX International symposium inSochi, 2006. – P. 236-241. (in Russian)
Kozlov E. V., Klopotov A. A., Solonitsina N. O., TaylashevA. S., Dementieva M. G. The size crystal geometry ofintermetallics with L12 structure // Features of structuresand properties of advanced materials. Tomsk: STL, 2006. – P.151-166. (in Russian)

Cited by (4)

Кулагина В.В., Клопотов А.А., Потекаев А.И., Перепелкин М.А., Чумаевский А.В., Клопотов В.Д., Старостенков М.Д., Фундаментальные проблемы современного материаловедения 10(2), 185-193 (2013).
Халиков А.Р., Искандаров А.М., Известия высших учебных заведений. Физика 55(12), 87-93 (2012).
Клопотов А.А., Кулагина В.В., Потекаев А.И., Перепелкин М.А., Кнестяпин Е.А., Клопотов В.Д., Абзаев Ю.А., Козлов Э.В., Фундаментальные проблемы современного материаловедения 9(4-2), 629-633 (2012).
Khalikov A.R., Iskandarov A.M., Russian Physics Journal 55(12), 1470-1477 (2013).