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Использование методики для определения реологических характеристик сплава АА5083
С. 23–29.
This paper is devoted to the simple methodic for determining the rheological characteristics approbation. Methodic is based on the free bulge experiments. In this work methodic is applied for determining rheological characteristics of АА5083 aluminum alloy at 450 Celsium degree. These characteristics were verified by using finite element modelling and compared with characteristics obtained from literature.
In book
Воронеж: ООО Фирма "Элист", 2015.
Zaitsev-Zotov S., Review of Scientific Instruments 2024 Vol. 95 No. 6 Article 063905
A biaxial tensile device for the transport study of layered materials is described. The device is mounted on the standard 24 pin zero force connector and can be moved between various setups. The compact design of the device makes it suitable for a wide range of studies. In our case, it is placed inside a ...
Added: February 25, 2025
Aksenov S. A., Mikolaenko V., European Journal of Mechanics, A/Solids 2025 Vol. 109 Article 105469
The design of superplastic forming technologies requires accurate description of material flow behaviour. Furthermore, as the flow curves reflect the deformation mechanisms and microstructure evolution of a material, their accurate determination is an important aspect of material science. The standard experimental method for determining superplastic flow curves is the tensile test, which encounters a significant ...
Added: September 19, 2024
Garkul A., Stegailov V., Scientific Reports 2022 Vol. 12 No. 1 Article 13325
Unlike conventional first-order phase transitions, the kinetics of amorphous-amorphous transitions has been much less studied. The ultrasonic experiments on the transformations between low-density and high-density amorphous ice induced by pressure or heating provided the pressure and temperature dependencies of elastic moduli. In this article, we make an attempt to build a microscopic picture of these ...
Added: August 8, 2022
Aksenov S. A., Sorgente D., CIRP Journal of Manufacturing Science and Technology 2020 No. 31 P. 618–627
As the characterization of superplastic materials requires elevated temperatures and strain rate control, standard bulge testing procedure with optical measuring systems is not feasible for the determination of biaxial stress–strain curves. Standard superplastic bulge forming tests performed at constant pressure can be used for the identification of material constants or formability evaluation, but they are not ...
Added: January 27, 2021
Aksenov S. A., Mikolaenko V., Metals 2020 Vol. 10 No. 10 Article 1353
Tensile testing is widely used for the mechanical characterization of materials subjected to superplastic deformation. At the same time, it is known that the obtained flow data are affected by specimen geometry. Thus, they characterize the specimen rather than the material. This work provides the numerical analysis aimed to study how the material flow behavior ...
Added: December 13, 2020
Zakhariev I., Procedia Manufacturing 2019 Vol. 37 P. 85–90
Superplastic Forming is an industrial process to produce thin-walled products of complex shape. At the same time this process allows one to obtain the products with close to uniform thickness distribution. The process exploits the abilities of some polycrystalline materials to large elongations before failure. The best formability can be achieved only under very specific ...
Added: February 4, 2020
Aksenov S. A., Sorgente D., Defect and Diffusion Forum 2018 Vol. 385 P. 443–448
The work is dedicated to determination of stress-strain behavior of Ti6Al4V alloy deformed in conditions of biaxial tension provided by free bulging testing. The dome height during each test was continuously measured and recorded using a magnetostrictive position transducer. All the tests were performed using stepped pressure regime with jump pressure changing between two values ...
Added: December 26, 2019
Jarrar F., Sorgente D., Aksenov S. A. et al., Materials Science Forum 2018 Vol. 941 P. 2343–2348
Superplastic forming has already been proven as a practical solution for manufacturing lightweight components in niche applications such as the aerospace and luxury cars industries. The demand to produce such components will continue with the limited nature of the energy resources available today. Therefore, superplastic materials are expected to stay as potential candidates in such ...
Added: December 26, 2019
Aksenov S. A., Sorgente D., Procedia Engineering 2017 Vol. 207 P. 1892–1897
In this work, a new experimental-numerical technique is developed in order to investigate the constitutive behaviour of a sheet material in conditions of superplastic forming. The principal feature of this technique is that unlike classical tensile testing it allows one to obtain stress-strain curves for a material formed in biaxial tension conditions produced by free ...
Added: February 20, 2018
Sorgente D., Palumbo G., Piccininni A. et al., CIRP Journal of Manufacturing Science and Technology 2018 No. 20 P. 29–35
Mechanical performances of titanium biomedical implants manufactured by superplastic forming are strongly related to the process parameters: the thickness distribution along the formed sheet has a key role in the evaluation of post-forming characteristics of the prosthesis. In this work, a finite element model able to reliably predict the thickness distribution after the superplastic forming ...
Added: December 1, 2017
Novikov L., Makletsov A. A., Sinolits V. V., Advances in Space Research (includes Cospar Information Bulletin) 2016 Vol. 57 No. 2 P. 671–680
In the paper, we discuss numerical modeling of spacecraft charging in geosynchronous orbit which was done using Coulomb-2, NASCAP-2K and SPIS codes, and present data obtained using the MUSCAT code too. The main distinctive features of the codes above are specified, description of the Coulomb-2 code is given in more details. We compare the results ...
Added: January 27, 2017
Zakhariev I., Aksenov S. A., Journal of Chemical Technology and Metallurgy 2017 Vol. 52 No. 5 P. 1002–1007
Free bulging process is an experimental technique which can be used to characterize a sheet material in conditions of biaxial tension during hot forming. Analytical and semi-analytical models of this process are usually based on the hypothesis offering certain relations between the geometrical characteristics of a bulge during forming. The paper presents an original relation ...
Added: December 11, 2016
Kotov A. D., Mikhaylovskaya A. V., Kishchik M. S. et al., Journal of Alloys and Compounds 2016 Vol. 688 P. 336–344
Highlights
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Superplastic behaviour and the microstructural evolution were investigated.
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Alloy with Al3(Sc,Zr) particles and alloy containing Al3Zr and Al3Ni particles.
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Alloy with Ni and Zr exhibits a 1.5–2 times finer grains during deformation.
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Al3Ni particles provide a larger number of nuclei for recrystallization.
Abstract
The superplastic properties of two high strength aluminium alloys are investigated. The first alloy contains fine, coherent ...
Added: September 9, 2016
Aksenov S. A., Kolesnikov A., Mikhaylovskaya A., Journal of Materials Processing Technology 2016 Vol. 237 P. 88–95
Uniaxial tensile testing is a most common way of obtaining the information about the constitutive behavior of a material during gas forming. At the same time for industrial applications it is important to know the material behavior in a biaxial tension mode, which is much closer to the one realized in a shell during forming ...
Added: December 7, 2015
Aksenov S. A., Zakhariev I., Osipov S. et al., Materials Science Forum 2016 Vol. 838-839 P. 552–556
Determination of material constants describing its behavior during superplastic gas
forming is the main subject of this study. The main feature of free bulging tests is the stress-strain
conditions which are very similar to ones occurring in the most of gas forming processes. On the
other hand, the interpretation of the results of such tests is a complicated ...
Added: November 23, 2015
Zakhariev I., Aksenov S. A., Демин Д. О., В кн.: Материалы Всероссийской научной школы-конференции "Механика предельного состояния и смежные вопросы" , посвященной 85-летию профессора Д. Д. Ивлева (Чебоксары, 15–18 сентября 2015 г.): в 2 ч.Ч. 1.: Чебоксары: Чувашский государственный педагогический университет им. И. Я. Яковлева, 2015. С. 192–197.
The paper presents a simple technique for the characterization of materials superplasticity by free bulging tests, which is based on inverse analysis. The main idea of this technique is a semianalytical solution of the direct problem instead of finite element
simulation which allows one to reduce the calculation time significantly. Presented method use experimental time-thickness and ...
Added: October 20, 2015