Phase transformations in aluminum alloys 1424 and V-1461 are investigated. Special features of the structure of the δ′-phase in the initial stages of aging of alloy 1424 are determined with the help of x-ray diffraction analysis and transmission electron microscopy. The earlier plotted diagram of aging-induced phase transformations (AIPT) of alloy 1424 is amended. The temperature and time ranges of the existence of the phases are determined and an AIPT diagram is plotted for alloy V-1461. It is shown that the maximum strength properties of alloy V-1461 are implemented in phase domains (δ′ + θ′ + \( {{T^{\prime}}_1} \) + S′) and (δ′ + \( {{T^{\prime}}_1} \) + S′). This makes it possible to obtain various phase compositions corresponding to the required combination of properties and substantiates the use of multistage aging modes.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
I. N. Fridlyander, V. S. Sandler, and T. I. Nikol’skaya, “Special features of the structure and properties of aluminum alloy 01420,” Metalloved. Term. Obrab. Met., No. 7, 20 – 22 (1983).
I. N. Fridlyander, V. S. Sandler, and T. I. Nikol’skaya, “Structure of alloy 01420 with zirconium,” Metalloved. Term. Obrab. Met., No. 8, 7 – 9 (1982).
I. N. Fridlyander and V. S. Sandler, “A study of the aging of alloys of the Al – Mg – Li system,” Fiz. Met. Metalloved., 32(4), 767 (1971).
I. N. Fridlyander, V. S. Sandler, and T. I. Nikol’skaya, “Variation of the phase composition of alloy 01420 during aging,” Metalloved. Term. Obrab. Met., No. 5, 2 – 5 (1971).
I. N. Fridlyander, V. S. Sandler, and T. I. Nikol’skaya, “Decomposition of the solid solution of alloys of the Al – Mg – Li system,” Metalloved. Term. Obrab. Met., No. 3, 41 – 43 (1972).
I. N. Fridlyander, T. I. Nikol’skaya, and V. S. Sandler, “Structure of alloy 01420 with zirconium,” Metalloved. Term. Obrab. Met., No. 8, 7 – 9 (1972).
I. N. Fridlyander, N. I. Kolobnev, L. B. Khokhlatova, et al., “Low-density structural alloy 1424 of the Al – Mg – Li – Zr – Sc system for welded and riveted aircraft structures,” Tekhnol. Legk. Splav., No. 4, 20 – 23 (2002).
I. N. Fridlyander, L. B. Khokhlatova, N. I. Kolobnev, et al., “Development of thermally stable aluminum-lithium alloy 1424 for welded fuselage applications,” Metalloved. Term. Obrab. Met., No. 1, 3 – 7 (2002).
J. N. Fridlyander, V. V. Antipov, and T. P. Fedorenko, “Product properties of the high workability 1441 Al – Li – Mg,” in: Proc. 9th Int. Conf. on Aluminum Alloys (2004), pp. 1051 – 1054.
M. S. Oglodkov, L. B. Khokhlatova, N. I. Kolobnev, et al., “Effect of thermomechanical treatment on the properties and structure of plates from an alloy of the Al – Cu – Mg – Li – Zn system,” Aviats. Mater. Tekhnol., No. 4, 7 – 11 (2010).
V. F. Shamrai, O. E. Grushko, V. N. Timofeev, et al., “Structural states of the material of pressings and sheets from an alloy of the Al – Cu – Li system with silver additive,” Metally, No. 3, 53 – 59 (2009).
Yu. Yu. Klochkova, O. E. Grushko, L. P. Lantsova, et al., “Pilot production of semiproducts from a promising aluminum-lithium alloy V-1469,” Aviats. Mater. Tekhnol., No. 1, 8 – 12 (2011).
E. A. Lukina, A. A. Alekseev, V. V. Antipov, et al., “Use of diagrams of phase transformations in aging for optimizing aging modes in Al – Li alloys V-1469, 1441,” Metally, No. 6, 60 – 67 (2009).
A. A. Alekseev and L. B. Ber, “Diagram of phase transformations in aging of alloys of the Al – Zr – Mg – (Cu), Al – Li – Cu and Al – Li – Cu – Mg systems,” Tekhnol. Legk. Splav., No. 5, 15 – 19 (1991).
I. N. Fridlyander, K. V. Chuistov, A. L. Berezina, and N. I. Kolobnev, Aluminum-Lithium Alloys. Structure and Properties [in Russian], Naukova Dumka, Kiev (1992), 192 p.
A. A. Alekseev, V. N. Anan’ev, L. B. Ber, and A. D. Shestakov, “Phase transformations in aging of Al – Li-Cu-Mg-(Zr) alloys,” Fiz. Met. Metalloved., 77(4), 120 – 130 (1994).
V. G. Davydov, L. B. Ber, E. Ya. Kaputkin, et al., “TTP and TTT diagrams for quench sensitivity and ageing of 1424 alloy,” Mater. Sci. Eng., A280, 76 – 82 (2000).
A. A. Alekseev, E. A. Lukina, M. I. Ermolova, and L. B. Khokhlatova, “Mechanism of __-phase formation in Al – Li and Al – Li – Mg systems alloys,” in: Proc. Conf. ICAA8, 2002, Cambridge U.K. (2002), Vols. 396 – 402, pp. 989 – 994.
E. A. Lukina, A. A. Alekseev, V. V. Antipov, et al., “Phase transformations in long-term low-temperature holds of alloys 1424, V-1469 and 1441,” Fiz. Met. Metalloved., 112(3), 253 – 261 (2011).
A. A. Alekseev, L. B. Khokhlatova, N. I. Kolobnev, et al., “An effect of chemical composition and heat treatment on phase composition and properties of Al – Cu – Li – Zn alloys B1461 with Zr, Sc additives,” in: Proc. Conf. ICAA11, 2008, Aachen, Germany (2008), pp. 234 – 240.
L. B. Khokhlatova, N. I. Kolobnev, M. S. Oglodkov, and E. A. Lukina, “Variation of the phase composition as a function of multistage aging and structure of semiproducts from alloy V-1461,” Metalloved. Term. Obrab. Met., No. 6, 20 – 24 (2012).
V. V. Antipov, N. I. Kolobnev, and L. B. Khokhlatova, “Development of aluminum-lithium alloys and multistage modes of heat treatment,” Aviats. Mater. Tekhnol., No. 1, 8 – 12 (2012).
E. N. Kablov, “Strategic directions for advancement of materials and processes of their treatment for the period of up to 2030,” in: Supplement to the Journal “Aviats. Mater. Tekhnol.” [in Russian], VIAM, Moscow (2012), pp. 7 – 17.
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 12 – 17, September, 2013.
Rights and permissions
About this article
Cite this article
Lukina, E.A., Alekseev, A.A., Khokhlatova, L.B. et al. Regular features of formation of main hardening phases in alloys 1424 of the Al – Mg – Li – Zn system and V-1461 of the Al – Cu – Li – Zn – Mg system. Met Sci Heat Treat 55, 466–471 (2014). https://doi.org/10.1007/s11041-014-9655-7
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11041-014-9655-7