RESEARCH OF STRUCTURE AND PROPERTIES OF FLAT SHEET ROLLED PRODUCTS FROM ALLOYS OF THE Al–Mg SYSTEM WHICH ECONOMICALLY DOPED BY SCANDIUM

В работе представлены результаты исследования структуры и свойств листов, полученных горячей и холодной прокаткой из алюминиевых термически неупрочняемых сплавов на основе системы Al–Mg. Показана возможность получения листового проката из экономно легированных переходными металлами сплавов системы Al–Mg с комплексом механических свойств, превосходящих уровень свойств полуфабрикатов из сплава 5083.The paper presents the results of studying the structures and properties of sheets obtained by hot and cold rolling from aluminum thermally non-hardening alloys based on the Al–Mg system. The possibility of producing of flat sheets rolled products from alloys of the Al–Mg system which economically doped by transition metals with a complex of mechanical properties that are superior to the level of properties of semi-finished products from alloy 5083 is shown.В работе использованы результаты исследований, выполненных в ходе проекта 03.G25.31.0265 «Разработка экономнолегированных высокопрочных Al-Sc сплавов для применения в автомобильном транспорте и судоходстве» в рамках Программы реализации комплексных проектов по созданию высокотехнологичного производства, утвержденных постановлением Правительства РФ № 218 от 9 апреля 2010 г

INVESTIGATION OF MECHANICAL PROPERTIES OF LONG-LENGTH SEMI-FINISHED PRODUCTS FROM ALLOYS BASED OF THE Al–Mg SYSTEM ECONOMICALLY ALLOWED BY SCANDIUM

Приведены результаты исследования свойств прутков, полученных совмещенными методами из сплава 1570 и опытного сплава на основе системы Al–Mg с содержанием скандия 0,10–0,14 %. Проанализирована возможность использования прутков в качестве заготовок для изготовления сварочной проволоки. Определены механические свойства листов основного металла и сварных соединений, выполненных аргонодуговой сваркой с использованием полученной проволоки.The results of a study of the properties of rods obtained by combined methods from alloy 1570 and an experimental alloy based on the Al–Mg system with a scandium content of 0.10–0.14% are presented. The possibility of using rods as billets for manufacturing a welding wire is analyzed. The mechanical properties of the base metal sheets and welded joints made by argon-arc welding using the obtained wire are determined

Study of strength properties of semi-finished products from economically alloyed high-strength aluminium-scandium alloys for application in automobile transport and shipbuilding

The results of a study on the strength of rolled products from aluminium alloys doped with scandium under various processing conditions of hot and cold rolling are presented. The regularities of metal flow and the level of strength of deformed semi-finished products from aluminum-scandium alloys are established, depending on the total degree of deformation and the various modes of single reduction during rolling. It is shown that when using one heating of a cast billet to obtain high-quality semi-finished products, the temperature during the rolling process should not be lower than 350-370°, and the total degree of deformation does not exceed 50-60%. It was found that the semi-finished products from alloys with a content of scandium in the range 0.11-0.12% in the deformed state had elevated values of ultimate tensile strength and yield strength of the metal, which allows them to be recommended for industrial production of sheet metal product

Study of Bars and Wires Properties from Al-REM System Alloy

The article presents the results of studies on the production of wire with a diameter of 0,5 mm from aluminum alloy 01417 with a content of rare-earth metals (REM) in the amount of 7–9 % for aircraft construction needs. The deformation modes, the experimental technique and equipment for the implementation of the proposed technology are described.В статье представлены результаты исследований по получению проволоки диаметром 0,5 мм из алюминиевого сплава 01417 с содержанием редкоземельных металлов (РЗМ) в количестве 7–9 % для нужд авиастроения. Описаны режимы деформации, методика проведения экспериментов и оборудование для реализации предложенной технологии.Исследования выполнены при финансовой поддержке РФФИ, Правительства Красноярского края и ООО «Научно-производственный центр Магнитной гидродинамики» в рамках научного проекта № 18-48-242021 «Разработка фундаментальных основ получения деформированных полуфабрикатов электротехнического назначения из высоколегированных сплавов системы Al-РЗМ с применением методов совмещенной обработки и исследование их реологических свойств»

Developing, Simulating, and Researching a Production Process of Long Deformed Semi-Fabricated Aluminum–Magnesium Products with a Varying Scandium Content

The research results of the production of long deformed semi-fabricated products by sheet rolling and direct extrolling from aluminum-magnesium alloys with various scandium content are presented. Computer simulation and physical modeling methods are used and the results are verified by pilot testing. The choice of these materials as objects of research is due to the fact that aluminum alloys of the Al–Mg system doped with scandium have an increased corrosion resistance along with high strength. In this regard, the present work sets up a target of obtaining long deformed semi-fabricated products in the form of sheet metal, bars, and welding wire from Al–Mg alloys, including lean alloyed ones. For computer simulation, the DEFORM-3D software package is used to determine the rational conditions for the hot rolling of large ingots and the deformation modes of the direct extrolling of bars from the alloys under consideration. The technological and power parameters of these processes and the laws of their change are established and justified. The experimental results make it possible to identify marginal values of the force parameters during the physical modeling of the processes under study, as well as to study the structure and properties of deformed, annealed, and welded semi-fabricated products from the alloys under consideration. In addition, the material properties are determined in a quite wide range of temperature, speed, and deformation parameters variations. Based on the experimental and simulation results, recommendations are given for the industrial development of hot rolling of heavy gauge aluminum-magnesium ingots. For this purpose, technological solutions, regulations, and conditions for the production of deformed semi-fabricated products from these alloys are developed and batches of sheet metal with the required mechanical and corrosion properties are obtained

Investigation of mechanical properties of cold-rolled, annealed and welded semi-finished products from the test alloys of Al-Mg system, economically alloyed with scandium

The results of experimental investigation of mechanical properties of sheet metal from an experimental aluminum alloys Al–Mg system alloyed with scandium have been represented. It was established that the deformed and annealed semi-finished products of these alloys have higher strength properties. Testing of welded samples made from these semi-finished products showed high corrosion resistance and strength of welded joints

Computer simulation, analy-sis of force and temperature-speed parameters of the pro-cess of combined machining of Al-Mg-Sc alloys

The results of studies of the combined processing of alloys of the Al-Mg-Sc system with known rheological properties under various temperature-rate and deformation conditions are presented. A computer model of the combined machining process was created and the DEFORM 3D complex was used to analyze the metal flow, the distribution of the strain rate and the temperature of the metal over the cross section of the workpiece when receiving round bars of various diameters. The results of the research were used to develop the production technology of welding wire from alloys of the Al-Mg-Sc system

Computer simulation, analysis of force and temperature-speed parameters of the process of combined machining of Al-Mg-Sc alloys

Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.The results of studies of the combined processing of alloys of the Al-Mg-Sc system with known rheological properties under various temperature-rate and deformation conditions are presented. A computer model of the combined machining process was created and the DEFORM 3D complex was used to analyze the metal flow, the distribution of the strain rate and the temperature of the metal over the cross section of the workpiece when receiving round bars of various diameters. The results of the research were used to develop the production technology of welding wire from alloys of the Al-Mg-Sc system

Computer simulation, analysis of force and combined machining of Al-Mg-Sc alloys

The results of studies of the combined processing of alloys of the Al-Mg-Sc system with known rheological properties under various temperature-rate and deformation conditions are presented. A computer model of the combined machining process was created and the DEFORM 3D complex was used to analyze the metal flow, the distribution of the strain rate and the temperature of the metal over the cross section of the workpiece when receiving round bars of various diameters. The results of the research were used to develop the production technology of welding wire from alloys of the Al-Mg-Sc system

Разработка, моделирование и исcледование технологии получения длинномерных деформированных полуфабрикатов из алюминиево-магниевых сплавов с низким содержанием скандия

The paper provides the results of studying the technology for producing longish deformed semi-finished products by sheet rolling and direct rolling-extruding of aluminum-magnesium alloys with different scandium contents. Computer and physical modeling methods were used for the research and the results were verified by pilot tests. These alloys were selected for the research due to the fact that Al–Mg aluminum alloys doped with scandium have increased corrosion resistance along with their high strength. In this regard, this research was aimed to obtain longish deformed semi-finished products in the form of sheet metal, rods and welding wire from economically alloyed Al–Mg alloys. Computer simulation was performed using the DEFORM-3D software package to determine rational conditions of hot rolling of large-sized ingots and deformation modes of the combined processing using the method of direct rolling-extruding of rods made of the investigated alloys. At the same time, the technological and force parameters of these processes were justified with the laws of their change presented. Experimental results obtained made it possible to determine the limit values of force parameters and to study the structure and properties of deformed, annealed and welded semi-finished products made of the investigated alloys during the physical modeling of processes studied. In addition, metal properties were determined in a fairly wide range of changes in temperature, speed, and deformation parameters. Based on the results of experimental studies and modeling, recommendations were given for the industrial development of the technology for hot rolling of thick ingots from the investigated alloys. At the same time, technological solutions, regulations and conditions for deformed semi-finished products made of the investigated alloys were developed and batches of sheet metal with the required level of mechanical and corrosion properties were obtained.Приведены результаты исследований технологии получения длинномерных деформированных полуфабрикатов методами листовой прокатки и бесслитковой прокатки–прессования из алюминиево-магниевого сплава с низким содержанием скандия. В ходе работы были применены методы компьютерного и физического моделирования, а полученные результаты проверены путем опытно-промышленных испытаний. Выбор данных материалов в качестве объектов исследования обусловлен тем, что алюминиевые сплавы системы Al–Mg, легированные скандием, наряду с высокой прочностью имеют повышенную стойкость к коррозии. В связи с этим в настоящей работе была поставлена задача получения длинномерных деформированных полуфабрикатов в виде листового проката, прутков и сварочной проволоки из экономнолегированного Al–Mg-сплава. Для компьютерного моделирования был применен программный комплекс DEFORM-3D, с помощью которого определяли рациональные условия горячей прокатки крупногабаритных слитков и режимы деформации процесса совмещенной обработки по методу бесслитковой прокатки–прессования прутков из исследуемого сплава. Установлены и обоснованы технологические и силовые параметры этих процессов и закономерности их изменения. Полученные экспериментальные результаты позволили при физическом моделировании изучаемых процессов выявить предельные значения силовых параметров, а также изучить структуру и свойства деформированных, отожженных и сварных полуфабрикатов из исследуемого сплава. Кроме того, были определены свойства металла в достаточно широком диапазоне изменения температурно-скоростных и деформационных параметров. На основании результатов экспериментальных исследований и моделирования даны рекомендации для промышленного освоения технологии горячей прокатки слитков большой толщины из алюминиево-магниевых сплавов. При этом разработаны технологические решения, регламенты и условия на деформированные полуфабрикаты из исследуемого сплава и получены партии листового проката с требуемым уровнем механических и коррозионных свойств