Effect of Radial Shear Rolling on the Structure and Mechanical Properties of a New-Generation High-Strength Aluminum Alloy Based on the Al – Zn – Mg – Ni – Fe System

Шуркин, П. К.; Akopyan, Т. К.; Галкин, С. П.; Алещенко, А. С.

doi:10.1007/s11041-019-00353-x

Cited by 28 publications

(12 citation statements)

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“…Physical simulation is needed and it must be executed on multi-purpose thermal-mechanical testing devices accurately reproducing the real industrial processing conditions. Materials 2020, 13, 1114 3 of 12…”

Section: Methodsmentioning

confidence: 99%

“…The ultra-fine grained structure is obtained by multiple assembling and rolling of sheets.The KOBO [11,12] method was developed at the Faculty of Non-Ferrous Metals of the AGH University of Science and Technology in Krakow by professors A. Korbel and W. Bochniak. This method also allows material deformation obtained by powder metallurgy.Rolling in a three-high skew mill with large roll skewing angles was proposed in the last century [13,14]. During rolling in an oblique three-roll mill, a state of stress is created in the metal that is close to universal compression with large shear deformation.…”

mentioning

confidence: 99%

“…Rolling in a three-high skew mill with large roll skewing angles was proposed in the last century [13,14]. During rolling in an oblique three-roll mill, a state of stress is created in the metal that is close to universal compression with large shear deformation.…”

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confidence: 99%

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Analysis of the Rolling Process of Alloy 6005 in a Three-High Skew Rolling Mill

2020

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This paper presents the results of numerical modelling of the rolling process of aluminum alloy bars in a three-high skew mill. The purpose of the examination was to determine the optimal rolling temperature for this alloy. The numerical examination for aluminum alloy 6005 (AlZn5.5MgCu) was performed using the Forge3 ® -2D Plane strain state commercial software. The rheological properties of the examined alloy were determined from uniaxial compression tests done using the metallurgical process simulation system Gleeble 3800. The numerical analysis of the process of rolling 6005 alloy bars in a three-high skew mill was conducted within the temperature range of 150-350 • C and at a deformation of 0.29.One of these methods is Accumulative Roll Bonding (ARB) [9,10]. The ultra-fine grained structure is obtained by multiple assembling and rolling of sheets.The KOBO [11,12] method was developed at the Faculty of Non-Ferrous Metals of the AGH University of Science and Technology in Krakow by professors A. Korbel and W. Bochniak. This method also allows material deformation obtained by powder metallurgy.Rolling in a three-high skew mill with large roll skewing angles was proposed in the last century [13,14]. During rolling in an oblique three-roll mill, a state of stress is created in the metal that is close to universal compression with large shear deformation. The rolled angles of the rolls led to increased technological plasticity by over 300% [15]. This method has found wide applications not only for rolling steel bars but also for bars made of non-ferrous metals. For example, titanium alloys were studied by Skripalenko et al. [16]. The study of aluminum bars from 2XXX alloys was conducted by Belov et al. [17]. A 7075 aluminum alloy rolled by a three-high skew mill was studied by [15]. Magnesium alloys were studied by Dobatkin et al. [18] and Gryc et al. [19].The continued interest in aluminum alloy products has caused the implementation of increasingly new technologies of their plastic working processes, which requires the proper design of the process to obtain products with high mechanical properties at a relatively small weight. The selection parameters of plastic working processes are currently based on numerical analyses of many technological variants, whereby the costs of implementing and adapting new technologies to industrial conditions can be reduced [20,21].By modifying the deformation scheme, it is possible to improve the mechanical properties of the finished product. Methods based on the process of rolling bars in a three-high skew mill combine different deformation schemes. Proposing a new technology of producing bars of a specific material with higher mechanical properties requires a detailed analysis of the plastic working conditions to be made. For plastic working processes, a basic feature that characterizes the plastic formability of material is the yield stress, σ p [22], which is the value of the stress necessary for initiating and continuing the plastic flow of metal under the conditions of a unia...

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Section: Methodsmentioning

confidence: 99%

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Analysis of the Rolling Process of Alloy 6005 in a Three-High Skew Rolling Mill

2020

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“…High-strength characteristics in combination with good ductility in the new alloy are achieved due to the uniform distribution over the aluminum matrix of precipitates after aging of nanosized dispersoids, as well as fine particles of the Al 9 FeNi phase. The different semi-finished products, such as sheets, bars, stampings, and wire, were made from nikalin AC7NZh, which indicated the possibility of its use as deformed semi-finished products [ 11 , 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Temperature Influence on Strain–Speed Parameters of Radial-Shear Rolling of Al-Zn-Mg-Ni-Fe Alloy

2022

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The comprehensive analysis of temperature influence on the strain–speed parameters of radial-shear rolling of Al-Zn-Mg-Ni-Fe alloy including the investigation of rheological properties, FEM simulation, and in-depth analytical interpretation of results was carried out. The rolling temperature has significant effect on the kinematic of metal forming, speed parameters, configuration, and length of trajectories. With the decrease in temperature, the speed of metal movement reduces, and this is the same for different components. The greatest decrease is noted for the axial speed component. In general, according to the nature of effect on the strain kinematic state, a temperature reduction of 100 °C (from 500 to 400 °C) acts similarly to a decrease in feed angle of about 4° and, in particular, increases the rolling time, nonuniformity of deformation, tightening, and temperature effect of deformation heating.

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“…В последние годы в научных литературных источниках публикуется много статей, посвященных изучению свойств материалов, полученных способом РСП [16][17][18]. Существующие исследования особенностей процесса РСП преимуще-ственно затрагивают обработку сталей [19,20] и некоторых цветных металлов и сплавов, в основном титановых [21][22][23][24][25] и сплавов магния [26][27][28].…”

Section: Introductionunclassified

Studying the influence of radial-shear rolling on the thermo-deformation conditions of aluminum AA1050 processing

Gamin

Koshmin

Долбачев

et al. 2020

Izv.VUZ. Tsvet. Met.

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Аннотация: Проведен анализ влияния режимов деформации на условия процесса радиально-сдвиговой прокатки (РСП) алюминия технической чистоты АД0. На основе моделирования методом конечных элементов (МКЭ) получено изменение температуры при различных углах подачи и вытяжках в первом и последнем проходах. Увеличение угла подачи незначительно повышает колебания температуры в поверхностном слое за счет роста частного обжатия, но несущественно влияет на общий деформационный разогрев в процессе РСП. Температуру окончания деформации возможно контролировать с помощью варьирования степени обжатия. При этом необходимо учитывать исходную температуру нагрева, размеры получаемого конечного проката и вытяжку за проход. Размер заготовки оказывает существенное влияние на тепловые изменения в процессе РСП. В последнем проходе, когда диаметральные размеры составляют 20-14 мм, деформационный разогрев практически полностью компенсируется охлаждением прутка при контакте с окружающей средой и инструментом и начинает преобладать с повышением коэффициента вытяжки больше 1,2. Анализ накопленной степени деформации (ε н ) при различных режимах деформации показал, что разница значений ε н по поперечному сечению прутка уменьшается при увеличении угла подачи. Сопоставление полученных данных с твердостью и микроструктурой прокатанных образцов АД0 показывает, что величина ε н оказывает значительное влияние на изменение структуры и свойств до определенного значения, что подтверждается полученным распределением микротвердости по поперечному сечению прутков. Механические свойства полученных прутков соответствуют свойствам алюминия технической чистоты в нагартованном состоянии (σ в ~ 115 МПа, σ 0,2 ~ 110 МПа, δ ~ 1 %, HV ~ 40÷43).Ключевые слова: алюминий, радиально-сдвиговая прокатка, моделирование методом конечных элементов, пластическая деформация, угол подачи, коэффициент вытяжки, режимы деформации.Гамин Ю.В. -канд. техн. наук, доцент кафедры обработки металлов давлением (ОМД) НИТУ «МИСиС» (119991, г. Москва, Ленинский пр-т, 4).

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Effect of Radial Shear Rolling on the Structure and Mechanical Properties of a New-Generation High-Strength Aluminum Alloy Based on the Al – Zn – Mg – Ni – Fe System

Cited by 28 publications

References 5 publications

Analysis of the Rolling Process of Alloy 6005 in a Three-High Skew Rolling Mill

Analysis of the Rolling Process of Alloy 6005 in a Three-High Skew Rolling Mill

Analysis of Temperature Influence on Strain–Speed Parameters of Radial-Shear Rolling of Al-Zn-Mg-Ni-Fe Alloy

Studying the influence of radial-shear rolling on the thermo-deformation conditions of aluminum AA1050 processing

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