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Formation of fine-grained structure and superplasticity in commercial aluminum alloy 1545ch
Metal Science and Heat Treatment. 2017. Vol. 58. No. 9. P. 543-547.
Kishchik M. S., Mikhailovskaya A. V., Levchenko V. S., Kotov A., Drits A. M., Portnoy V. K.
A proсеss for fabriсating 5.mm-thiсk shеets from alloy l565сh with rеcrystallized grains lеss than l0 µm in sizе is dеvеlopеd, whiсh involvеs supеrplastiс forming and providеs еlеvatеd mесhaniсal propеrtiеs at room tеmpеratuге.Тhе paramеtеrs of supеrplastiсitу and thе mесhaniсal propеrtiеs of alloy l565сh arе dеtегminеd. Tеst forming оf a domе-shapе modеl part is pеrformеd.
Research target:
Construction
Mechanics and Mechanical Engineering
Effective Natural Resource Management
Priority areas:
engineering science
Language:
English
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
Chumachenko E. N., Смирнов О. М., Цепин М. А., М. : Либроком, 2009
В монографии анализируются особенности технологических процессов деформирования материалов в условиях сверхпластичности и проблемы, возникающие при работе с материалами, обладающими повышенной скоростной чувствительностью. Приведена математическая постановка задачи о медленном течении физически нелинейных сред с учетом контактного трения, обсуждаются ограничения на применение модели и некоторые частные решения. Особое внимание уделено моделированию контактного взаимодействия в процессах обработки металлов ...
Added: January 17, 2014
Aksenov S. A., Chumachenko E. N., Osipov S. et al., Procedia Engineering 2014 Vol. 81 P. 1017-1022
This study proposes a method for determining the material constitutive equations and optimal forming conditions on the basis of free bulging tests. The blow-forming tests were carried out at the temperature of 420 °C using aluminum alloy (AMg-6) sheets of a 1 mm thickness. Each test was performed at constant pressure. For each fixed value ...
Added: October 16, 2014
Aksenov S. A., Chumachenko E. N., Logashina I. V., Materials Science Forum 2013 Vol. 762 P. 392-397
This paper presents the research of the flow characteristics of the Ti-6V-4Al alloy in wide ranges of temperature (725 ‑ 950 °C) and strain rate (10-5 ‑ 10-2 s-1). The material processing maps were constructed based on the basis of dynamic materials model (DMM) developed by Prassad and modified by Narayana Murty. For the construction of such maps the data of ...
Added: July 3, 2013
Zakhariev I., Aksenov S. A., Logashina I. V., Металлург 2016
The paper is oriented toward the problem of superplastic materials characterization using free bulging testing. This experimental technique allows one to study the material flow behavior in conditions of biaxial tension which is very close to the ones occurring during hot gas forming. The interpretation of the results is proposed to perform by inverse analysis ...
Added: June 19, 2016
Mikhaylovskaya A. V., Mosleh A. O., Kotov A. et al., Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing 2017 No. 708 P. 469-477
Superplastic deformation behaviour of conventional sheets of a near-α titanium alloy (Ti-2.5Al-1.8Mn) was studied by a step-by-step decrease of the strain rate and constant strain rate tests in a temperature range of 790–915 °C. The research found that superplastic deformation is possible in a temperature range of 815–890 °С and a constant strain rate range ...
Added: December 1, 2017
Mikhaylovskaya A. V., Yakovtseva O. A., Cheverikin V. V. et al., Materials Science and Engineering: A 2016 No. 659 P. 225-233
Superplastic deformation behaviour of two aluminium-based AA7XXX type alloys with Sc and Zr additives distinguished by the presence and absence of coarse eutectic Al9FeNi particles are compared. An alloy with Al9FeNi particles exhibits high strain rate superplasticity at constant strain rate range of 5!10"3–8!10"2 s"1 with elongation of 915% due to extensive dynamic recrystallisation. Effective ...
Added: June 21, 2016
Mosleh A., Mikhaylovskaya A., Kotov A. et al., Metals 2017 Vol. 7 No. 12 P. 1-15
The paper focuses on developing constitutive models for superplastic deformation behaviour of near-αtitanium alloy (Ti-2.5Al-1.8Mn) at elevated temperatures in a range from 840 to 890 °C and in a strain rate range from 2 × 10−4 to 8 × 10−4 s−1. Stress–strain experimental tensile tests data were used to develop the mathematical models. Both, hyperbolic sine Arrhenius-type ...
Added: February 1, 2018
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
Chumachenko E. N., Portnoi V. K., Logashina I. V., Metallurgist 2015 Vol. 59 P. 69-75
Different test methods are described to determine the mechanical properties of materials in the superplastic state. The flow stress depends on strain and strain rate, the structural parameter of the materials, and temperature. The rheology and mechanics of superplastic deformation are discussed. The methods have been checked for reliability and produced good results in testing ...
Added: September 7, 2015
Chumachenko E. N., Портной В. К., Logashina I. V., Металлург 2014 № 12 С. 68-71
The various test methods for determining the mechanical properties of materials in a state of superplasticity were considered. The tension depends from the deformation and strain rate, the structural parameter and temperature. The rheology and mechanics of superplastic deformation were discusses. Methodology has been tested and gave good results when tested Ti alloys and constructing ...
Added: February 9, 2015
Sidorenko V., Чжо М. А., Электроника и электрооборудование транспорта 2016 № 6 С. 13-16
This paper analyzes the different approaches to the technical maintenance of electric subway trains based on the safety of complex transport systems. The results were obtained from using the genetic algorithm. ...
Added: January 12, 2017
Savenkova I., Кондратов А. П., Известия высших учебных заведений. Проблемы полиграфии и издательского дела 2012 № 6 С. 57-65
Технико-экономическая оценка, включающая расчеты себестоимости защитных ярлыков из крупнотоннажных термопластичных полимеров, проведена на примере комбинированного защитного знака с многоуровневой кодировкой для защиты упаковки товаров массового спроса, разработанного в рамках Федеральной целевой программы «Исследования и разработки по приоритетным направлениям развития научно-технологического комплекса России на 2007-2013 гг.». ...
Added: September 20, 2017
Proskuryakova L. N., Ермоленко Г. В., М. : Издательский дом НИУ ВШЭ, 2017
В аналитическом докладе представлены результаты форсайт-проекта «Исследование глобальных вызовов и долгосрочных тенденций инновационного развития в сфере возобновляемых источников энергии», проведенного ИСИЭЗ НИУ ВШЭ при информационной и финансовой поддержке Группы компаний «Ренова».
Исследование было сфокусировано на трех тематических областях: преобразование энергии солнца в электрическую; преобразование энергии ветра в электрическую; преобразование энергетической биомассы в тепловую и электрическую энергию. ...
Added: April 4, 2017
Марширов И. В., Мустафин Г. А., Marshirov V. V., Ползуновский альманах 2015 № 2 С. 101-104
Рассмотрены особенности разработки технологии изготовления отливок с применением систем компьютерного моделирования. Приведены результаты моделирования гидродинамических и усадочных прпоцессов отливки из стали 35Л. ...
Added: February 18, 2016
Буров А.А., Герман А. Д., Косенко И. И., Космические исследования 2014 Т. 52 № 4 С. 307-312
The problem of planar oscillations of a pendulum with variable length suspended on the Moon’s surface is considered. It is assumed that the Earth and Moon (or, in the general case, a planet and its satellite, or an asteroid and a spacecraft) revolve around the common center of mass in unperturbed elliptical Keplerian orbits. We ...
Added: November 8, 2014
Chetverik N. P., Строительные материалы, оборудование, технологии XXI века 2012 № 5 (148) С. 23-26
Разъяснено о лабораторном контроле в рамках строительного контроля, как основании системы безопасности в строительстве. ...
Added: March 5, 2013
Kulagin V., Grushevenko D., Капустин Н. О. et al., Environmental Progress and Sustainable Energy 2018 Vol. 37 No. 1 P. 498-504
Diversification of energy sources in the road transport sector is becoming a global trend with the emergence of economically and technologically viable alternative fuels, such as electricity, biofuels, compressed natural gas, and others. With the transport sector generating over 50% of global oil demand, this trend obviously holds great significance. The Russian Federation, while being ...
Added: February 2, 2018
Kotelnikov D. S., Технологии электромагнитной совместимости 2013 № 4(47) С. 69-77
The article examines the current international and national principles, characteristics and basic obligatory requirements of technical regulations in the field of electromagnetic compatibility of technical equipment. ...
Added: March 6, 2014
IEEE, 2015
Added: March 16, 2015
Ермоленко Г. В., Proskuryakova L. N., Ермоленко Б. В., Foresight 2017 Vol. 19 No. 5 P. 528-540
Purpose – The purpose of the study is to show the technical potentials of a variety of renewable energy sources in Russia, as well as benefits from their deployment including hydrocarbon savings, emission reduction and lower energy cost. Design/methodology/approach – In the paper, Russia is compared with other countries in terms of actual installed capacity ...
Added: September 25, 2017
М. : National Instruments Russia, 2017
Содержание сборника составляют доклады с результатами оригинальных исследований и технических решений, ранее не публиковавшиеся. Мы надеемся, что предлагаемый сборник окажется полезным для специалистов, работающих в различных областях науки и техники, для широкого круга преподавателей, аспирантов и студентов ВУЗов, а также для преподавателей средних школ и технических колледжей. ...
Added: May 10, 2017
Zhadnov V. V., М. : МИЭМ НИУ ВШЭ, 2015
Рассмотрены вопросы применения автоматизированных систем обеспечения надежности и качества радиоэлектронных средств на примере визуальной среды обеспечения надежности при проектировании - программного комплекса АСОНИКА-К. Приведено описание расчетных методов, применяемых при проектировании радиоэлектронных средств для оценки показателей их надежности. Приведены типовые задачи проектных исследований надежности радиоэлектронных средств, для решения которых могут применяться система расчета надежности электронных модулей ...
Added: December 24, 2015
Chetverik N. P., Техническое регулирование. Строительство, проектирование и изыскания 2012 № 1(2) С. 26-30
Рассказано об организации строительного контроля, как системы безопасности в строительстве. ...
Added: March 21, 2013