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Study of the Structure and Phase Composition of Laser Welded Joints of Al-Cu-Li Alloy under Different Heat Treatment Conditions Full article

Journal International Journal of Advanced Manufacturing Technology
ISSN: 0268-3768 , E-ISSN: 1433-3015
Output data Year: 2019, Volume: 104, Number: 9-12, Pages: 4313-4324 Pages count : 12 DOI: 10.1007/s00170-019-04286-w
Tags Laser welding . Aluminum-lithium alloy . Electron microscopy . Synchrotron radiation . X-ray diffractometry . Mechanical characteristics
Authors Malikov Alexandr 1 , Bulina Natalia 2 , Sharafutdinov M. 2,3 , Orishich A. 1
Affiliations
1 Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
2 Institute of Solid State Chemistry and Mechanochemistry SB RAS
3 Budker Institute of Nuclear Physics SB RAS

Abstract: This paper explores the structure and phase composition of laser welded joints of Al-Cu-Li alloy without and after post heat treatment (annealing, quenching, and artificial aging). Changes in the structure and phase composition of welds and the base alloy before and after heat treatment are studied using scanning electron microscopy, X-ray diffractometry, and synchrotron radiation diffraction. The investigation results have shown that the formed agglomerates of intermetallic particles are mainly represented by the Т1(Al2CuLi) phase. The change in the strength of the Al-Cu-Li alloy samples after laser welding and heat treatment is not due to the absence or presence of the strengthening Т1(Al2CuLi) intermetallic phase but rather due to the different localization of particles of this phase in the weld joint. The segregation of the phase at dendritic grain boundaries leads to a significant strength decrease, and, vice versa, its homogeneous distribution in the solid solution achieved by post heat treatment (annealing, quenching, and artificial aging) increases the strength of the laser welded samples.
Cite: Malikov A. , Bulina N. , Sharafutdinov M. , Orishich A.
Study of the Structure and Phase Composition of Laser Welded Joints of Al-Cu-Li Alloy under Different Heat Treatment Conditions
International Journal of Advanced Manufacturing Technology. 2019. V.104. N9-12. P.4313-4324. DOI: 10.1007/s00170-019-04286-w WOS Scopus РИНЦ OpenAlex
Dates:
Submitted: Jun 1, 2019
Accepted: Aug 8, 2019
Published online: Aug 15, 2019
Published print: Aug 15, 2021
Identifiers:
Web of science: WOS:000500220700074
Scopus: 2-s2.0-85070952279
Elibrary: 41643966
OpenAlex: W2966910505
Citing:
DB Citing
Web of science 15
Scopus 19
OpenAlex 20
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