Effect of post heat treatment on the phase composition and strength of laser welded joints of an Al–Mg–Li alloy

Effect of post heat treatment on the phase composition and strength of laser welded joints of an Al–Mg–Li alloy Full article

Journal

Materials Science and Engineering A
ISSN: 0921-5093

Output data

Year: 2019, Volume: 765, Article number : 138302, Pages count : 8 DOI: 10.1016/j.msea.2019.138302

Tags

Aluminum-lithium alloy; Electron microscopy; Laser welding; Mechanical properties; Synchrotron radiation; X-ray diffraction

Authors

Malikov Alexander ¹ , Orishich Anatoliy ¹ , Bulina Natalia ^1,3 , Karpov Evgenij ^1,2 , Sharafutdinov Marat ⁴

Affiliations

1	Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Science
2	Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences
3	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences
4	G.I. Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences,

In the present work, the effects of laser beam welding and post-weld heat treatment on the phase composition and mechanical properties of the 1424 alloy (Al–Mg–Li) joints were investigated. Holding the joints at a certain temperature was followed by quenching and artificial aging. The structural studies were carried out using electron microscopy, conventional X-ray diffractometry, and synchrotron radiation diffractometry. The heat treatment conditions were optimized to favor the formation of strengthening phases in the welds, the presence of which imparted mechanical strength to the joints. For the first time, 1424 Al alloy joints with a weld strength of σuts = 500 MPa have been obtained; this value of strength was achieved by applying post-weld annealing followed by quenching and artificial aging.

Malikov A. , Orishich A. , Bulina N. , Karpov E. , Sharafutdinov M.
Effect of post heat treatment on the phase composition and strength of laser welded joints of an Al–Mg–Li alloy
Materials Science and Engineering A. 2019. V.765. 138302 :1-8. DOI: 10.1016/j.msea.2019.138302 WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000487767200016
Scopus:	2-s2.0-85070862443
Elibrary:	41796736
OpenAlex:	W2969611792

DB	Citing
Scopus	20
OpenAlex	24
Elibrary	26
Web of science	18