Study of the Evolution of the Phase Composition of Laser Welded Joints of Third-Generation Al–Li Alloys with the Use of Synchrotron Radiation | Sciact - CRIS-система Института катализа

Study of the Evolution of the Phase Composition of Laser Welded Joints of Third-Generation Al–Li Alloys with the Use of Synchrotron Radiation Научная публикация

Журнал

Bulletin of the Russian Academy of Sciences: Physics
ISSN: 1062-8738 , E-ISSN: 1934-9432

Вых. Данные

Год: 2024, Том: 88, Номер: S1, Страницы: S89-S99 Страниц : 11 DOI: 10.1134/s1062873824708857

Ключевые слова

laser welding, aluminum–lithium alloys, synchrotron radiation, mechanical properties

Авторы

Malikov A.G. ¹ , Vitoshkin I.E. ¹ , Mironova M.I. ^1,2 , Zavjalov A.P. ^1,3 , Kuper K.E. ^1,3

Организации

1	Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
2	Laboratory of Functional Diagnostics of Low-Dimensional Structures for Nanoelectronics, Novosibirsk State University, 630090, Novosibirsk, Russia
3	Synchrotron Radiation Facility—Siberian Circular Photon Source “SKIF,” Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630559, Koltsovo, Russia

Информация о финансировании (1)

Российский научный фонд

23-79-00037

We studied the evolution of the phase composition of laser welded joints before and after heat treatment of 3rd generation Al–Li alloys using synchrotron radiation. The article demonstrates the fundamental role of the alloying elements of copper and lithium in formation of the phase composition of the fusion zone of the weld. It has been established that laser exposure changes the phase composition of the alloy. Namely, low copper contents mainly lead to formation of T2(Al6CuLi3) and T3(Al5CuLi3) phases, the average copper contents form T1(Al2CuLi), T2(Al6CuLi3), T3(Al5CuLi3) phases and the presence of high copper contents results in formation of T1(Al2CuLi) phase at the boundaries of dendrite. Post-heat treatment restores the initial phase composition in the fusion zone. As for the solid solution, the δ'(Al3Li) phase is formed at low copper contents, the δ'(Al3Li) and T1(Al2CuLi) phases are formed at average copper contents, and T1(Al2CuLi) phase is observed at high copper contents. Consequently, this makes it possible to improve the mechanical properties of weld joint specimens to match the numbers of the initial alloy.

Malikov A.G. , Vitoshkin I.E. , Mironova M.I. , Zavjalov A.P. , Kuper K.E.
Study of the Evolution of the Phase Composition of Laser Welded Joints of Third-Generation Al–Li Alloys with the Use of Synchrotron Radiation
Bulletin of the Russian Academy of Sciences: Physics. 2024. V.88. NS1. P.S89-S99. DOI: 10.1134/s1062873824708857 Scopus OpenAlex СКИФ ID

Поступила в редакцию:	8 окт. 2024 г.
Принята к публикации:	14 окт. 2024 г.
Опубликована в печати:	1 дек. 2024 г.
Опубликована online:	17 янв. 2025 г.

Scopus:	2-s2.0-85217441644
OpenAlex:	W4406535057
СКИФ ID:	3702

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