Structural State of a Weld Formed in Aluminum Alloy by Friction Stir Welding and Treated by Ultrasound / V. A. Klimenov [et al.]

Уровень набора: Russian Physics Journal = 1965-Альтернативный автор-лицо: Klimenov, V. A., specialist in the field of non-destructive testing, Professor of Tomsk Polytechnic University, Doctor of technical sciences, 1951-, Vasily Aleksandrovich;Abzaev, Yu. A., Yury Afanasjevich;Potekaev, A. I., Aleksandr Ivanovich;Vlasov, V. A., Russian scientist, one of leading specialists in Russia in the physics, plasma chemistry and molecular physics fields, Professor of TPU, 1958-, Viktor Alekseevich;Klopotov, A. A., Anatoly Anatoljevic;Zaitsev, K. V., specialist in the field of mechanical engineering, associate professor of Yurga technological Institute of Tomsk Polytechnic University, candidate of technical sciences, 1981-, Konstantin Viktorovich;Chumaevsky, A. V., Andrey Vladimirovich;Porobova, S. A., Svetlana Aleksandrovna;Grinkevich, L. S., Larisa Sergeevna;Tazin, I. D., Ivan Dmitrievich;Tazin, D. I., Dmitry IvanovichКоллективный автор (вторичный): Национальный исследовательский Томский политехнический университет (ТПУ), Институт физики высоких технологий (ИФВТ), Кафедра сильноточной электроники (СЭ);Национальный исследовательский Томский политехнический университет (ТПУ), Юргинский технологический институт (филиал) (ЮТИ), Кафедра технологии машиностроения (ТМС);Национальный исследовательский Томский политехнический университет (ТПУ), Физико-технический институт (ФТИ), Кафедра технической физики (№ 23) (ТФ)Язык: английский.Резюме или реферат: The experimental data on structural state of an aluminum alloy, AlMg6, in the weld zone formed by friction stir welding are analyzed in order to evaluate the effect of its subsequent ultrasonic treatment. It is found that the crystal lattice transits into a low-stability state as a result of combined heat-induced and severe shear deformation. This transition is accompanied by considerable structural-phase changes that are manifested as an increased lattice parameter of the solid solution. This increase is caused by both high values of internal stresses and increased concentration of Mg atoms in the solid solution due to essential dissolution of the ?-Al2Mg3 particles with the content of manganese higher than that in the matrix. This is accompanied by high-intensity diffusion and relaxation processes due to the low-stability state of crystal lattice (inhomogeneous stresses) in the weld zone..Примечания о наличии в документе библиографии/указателя: [References: p. 977 (14 tit.)].Аудитория: .Тематика: электронный ресурс | труды учёных ТПУ | трение | ротационная сварка | алюминиевые сплавы | структурные состояния Ресурсы он-лайн:Щелкните здесь для доступа в онлайн
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[References: p. 977 (14 tit.)]

The experimental data on structural state of an aluminum alloy, AlMg6, in the weld zone formed by friction stir welding are analyzed in order to evaluate the effect of its subsequent ultrasonic treatment. It is found that the crystal lattice transits into a low-stability state as a result of combined heat-induced and severe shear deformation. This transition is accompanied by considerable structural-phase changes that are manifested as an increased lattice parameter of the solid solution. This increase is caused by both high values of internal stresses and increased concentration of Mg atoms in the solid solution due to essential dissolution of the ?-Al2Mg3 particles with the content of manganese higher than that in the matrix. This is accompanied by high-intensity diffusion and relaxation processes due to the low-stability state of crystal lattice (inhomogeneous stresses) in the weld zone.

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