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Effect single-stage and three-stage aging treatment on the microstructure, phase composition, and mechanical properties of laser-welded joint Al-Cu-Li alloy. / Malikov, Alexandr; Mironova, Maria; Vitoshkin, Igor et al.

In: Welding in the World, 22.03.2025.

Research output: Contribution to journal › Article › peer-review

Harvard

Malikov, A, Mironova, M, Vitoshkin, I, Beglyarov, E, Gertsel, I, Karpov, E, Zakharchenko, K & Zavyalov, A 2025, 'Effect single-stage and three-stage aging treatment on the microstructure, phase composition, and mechanical properties of laser-welded joint Al-Cu-Li alloy', Welding in the World. https://doi.org/10.1007/s40194-025-02016-3

APA

Malikov, A., Mironova, M., Vitoshkin, I., Beglyarov, E., Gertsel, I., Karpov, E., Zakharchenko, K., & Zavyalov, A. (2025). Effect single-stage and three-stage aging treatment on the microstructure, phase composition, and mechanical properties of laser-welded joint Al-Cu-Li alloy. Welding in the World, [157519]. https://doi.org/10.1007/s40194-025-02016-3

Vancouver

Malikov A, Mironova M, Vitoshkin I, Beglyarov E, Gertsel I, Karpov E et al. Effect single-stage and three-stage aging treatment on the microstructure, phase composition, and mechanical properties of laser-welded joint Al-Cu-Li alloy. Welding in the World. 2025 Mar 22;157519. doi: 10.1007/s40194-025-02016-3

Author

Malikov, Alexandr ; Mironova, Maria ; Vitoshkin, Igor et al. / Effect single-stage and three-stage aging treatment on the microstructure, phase composition, and mechanical properties of laser-welded joint Al-Cu-Li alloy. In: Welding in the World. 2025.

BibTeX

@article{fbb58f95bd8748ca834b3386cd4c3b1e,
title = "Effect single-stage and three-stage aging treatment on the microstructure, phase composition, and mechanical properties of laser-welded joint Al-Cu-Li alloy",
abstract = "To this day, the structural strength of laser-welded joints of Al-Li alloys made with a fiber laser has not been thoroughly studied. In this research, high-strength laser-welded joints of Al-2.7Cu-1.8 alloy were obtained using a fiber laser followed by post-weld heat treatment. The laser-welding process parameters were optimized, including welding speed, radiation power, and location of the focal spot. In addition, the influence of these parameters on the microstructure of the welded joints has been studied. After welding, the welded joints were heat treated (PWHT) in two modes to achieve optimal mechanical properties. Changes in the structural and phase composition of the weld material before and after PWHT were examined using synchrotron diffraction and transmission electron microscopy. The obtained research results have shown that during laser welding, copper-containing phases formed at the boundary of dendrites in the weld material, which leads to a reduction in strength. The process of post-weld heat treatment (PWHT) has led to the restoration of the phase composition in the material of the weld. The cyclic (fatigue strength), dynamic (crack strength), and static (yield strength and ultimate tensile strength) properties of laser-welded joints after PWHT have been studied. It has been observed that PWHT using mode 1 allows to achieve maximum fatigue and dynamic properties, while PWHT using mode 2 results in achieving maximum static properties at various temperatures.",
keywords = "Al-Cu-Li alloy, Fiber laser, welding, Mechanical properties, Microstructure, Phase composition, Post-weld heat treatment, Synchrotron radiation, Transmission electron microscopy",
author = "Alexandr Malikov and Maria Mironova and Igor Vitoshkin and Egor Beglyarov and Ilya Gertsel and Evgeniy Karpov and Kirill Zakharchenko and Alexey Zavyalov",
note = "This research was funded by Russian Scientific Foundation, grant number 23–79-00037 (https://rscf.ru/project/23-79-00037/).",
year = "2025",
month = mar,
day = "22",
doi = "10.1007/s40194-025-02016-3",
language = "English",
journal = "Welding in the World",
issn = "0043-2288",

}

RIS

TY - JOUR

T1 - Effect single-stage and three-stage aging treatment on the microstructure, phase composition, and mechanical properties of laser-welded joint Al-Cu-Li alloy

AU - Malikov, Alexandr

AU - Mironova, Maria

AU - Vitoshkin, Igor

AU - Beglyarov, Egor

AU - Gertsel, Ilya

AU - Karpov, Evgeniy

AU - Zakharchenko, Kirill

AU - Zavyalov, Alexey

N1 - This research was funded by Russian Scientific Foundation, grant number 23–79-00037 (https://rscf.ru/project/23-79-00037/).

PY - 2025/3/22

Y1 - 2025/3/22

N2 - To this day, the structural strength of laser-welded joints of Al-Li alloys made with a fiber laser has not been thoroughly studied. In this research, high-strength laser-welded joints of Al-2.7Cu-1.8 alloy were obtained using a fiber laser followed by post-weld heat treatment. The laser-welding process parameters were optimized, including welding speed, radiation power, and location of the focal spot. In addition, the influence of these parameters on the microstructure of the welded joints has been studied. After welding, the welded joints were heat treated (PWHT) in two modes to achieve optimal mechanical properties. Changes in the structural and phase composition of the weld material before and after PWHT were examined using synchrotron diffraction and transmission electron microscopy. The obtained research results have shown that during laser welding, copper-containing phases formed at the boundary of dendrites in the weld material, which leads to a reduction in strength. The process of post-weld heat treatment (PWHT) has led to the restoration of the phase composition in the material of the weld. The cyclic (fatigue strength), dynamic (crack strength), and static (yield strength and ultimate tensile strength) properties of laser-welded joints after PWHT have been studied. It has been observed that PWHT using mode 1 allows to achieve maximum fatigue and dynamic properties, while PWHT using mode 2 results in achieving maximum static properties at various temperatures.

AB - To this day, the structural strength of laser-welded joints of Al-Li alloys made with a fiber laser has not been thoroughly studied. In this research, high-strength laser-welded joints of Al-2.7Cu-1.8 alloy were obtained using a fiber laser followed by post-weld heat treatment. The laser-welding process parameters were optimized, including welding speed, radiation power, and location of the focal spot. In addition, the influence of these parameters on the microstructure of the welded joints has been studied. After welding, the welded joints were heat treated (PWHT) in two modes to achieve optimal mechanical properties. Changes in the structural and phase composition of the weld material before and after PWHT were examined using synchrotron diffraction and transmission electron microscopy. The obtained research results have shown that during laser welding, copper-containing phases formed at the boundary of dendrites in the weld material, which leads to a reduction in strength. The process of post-weld heat treatment (PWHT) has led to the restoration of the phase composition in the material of the weld. The cyclic (fatigue strength), dynamic (crack strength), and static (yield strength and ultimate tensile strength) properties of laser-welded joints after PWHT have been studied. It has been observed that PWHT using mode 1 allows to achieve maximum fatigue and dynamic properties, while PWHT using mode 2 results in achieving maximum static properties at various temperatures.

KW - Al-Cu-Li alloy

KW - Fiber laser, welding

KW - Mechanical properties

KW - Microstructure

KW - Phase composition

KW - Post-weld heat treatment

KW - Synchrotron radiation

KW - Transmission electron microscopy

UR - https://www.mendeley.com/catalogue/a7f8d879-99b5-37ff-8bc7-e4ae46d4e314/

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-105000743485&origin=inward&txGid=c1086d086fd0fd1ad99286df17622220

U2 - 10.1007/s40194-025-02016-3

DO - 10.1007/s40194-025-02016-3

M3 - Article

JO - Welding in the World

JF - Welding in the World

SN - 0043-2288

M1 - 157519

ER -

ID: 65132578