The influence of fabrication modes of sheets of V-1461 alloy on the structure crystallography and anisotropy of properties
https://doi.org/10.17073/0021-3438-2015-6-36-42
Abstract
The results of studying the influence of manufacturing modes of sheets 1,5, 2,0 and 3,0 mm thick made of V-1461 Al–Li alloy on the
microstructure, crystallographic orientation, and anisotropy of properties are presented. It is established that the deformed structure is characteristic of all studied samples, and sheets 3.0 mm thick have partially recrystallized structure, those 2,0 mm thick have unrecrystallized structure, and those 1,5 mm thick have mainly recrystallized structure. The preferential crystallographic orientation of the samples 1,5 mm thick is [110](200), that of samples 2,0 mm thick is [110](110), and that of 3,0 mm thick is [210](110). All the sheets possess insignificant anisotropy of properties irrespective of thickness, and extremely low anisotropy index (μ < 0,4) is characteristic of them. These facts determine the liability of aluminum–lithium alloys to the preferential development of deformation over the sheet thickness, which leads to its premature thinning and lowers admissible forming in the course of drawing and stretching.
About the Authors
Ya. A. Erisov
Самарский государственный аэрокосмический университет (СГАУ) им. акад. С.П. Королева (национальный исследовательский университет)
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Senior Engineer of NIL-37 of Samara State Aerospace University (SSAU) (443086, Russia, Samara, Moskovskoe shosse, 34)
F. V. Grechnivov
Самарский государственный аэрокосмический университет (СГАУ) им. акад. С.П. Королева (национальный исследовательский университет)
Russian Federation
Dr. Sci. (Eng.), Corresponding Member of the RAS, Head of Metal Forming Department of SSAU
Russian Federation
Dr. Sci. (Eng.), Corresponding Member of the RAS, Head of Metal Forming Department of SSAU
M. S. Oglodokov
Всероссийский научно-исследовательский институт авиационных материалов (ВИАМ), г. Москва
Russian Federation
Russian Federation
Senior Researcher of NIL-37 of SSAU, Senior Researcher of All-Russia Institute of Aviation Materials (105005, Russia, Moscow, Radio str., 17)
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Review
For citations:
Erisov Ya.A., Grechnivov F.V., Oglodokov M.S. The influence of fabrication modes of sheets of V-1461 alloy on the structure crystallography and anisotropy of properties. Izvestiya. Non-Ferrous Metallurgy. 2015;(6):36-42. (In Russ.) https://doi.org/10.17073/0021-3438-2015-6-36-42
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