A. M. Orishich, A. G. Malikov, E. V. Karpov, N. A. Pavlov, I. S. Mesenzova, “Effect of thermal treatment on mechanical and microstructural properties of the welded joint of the Al–Mg–Li alloy obtained by laser-assisted welding”, Prikl. Mekh. Tekh. Fiz., 2018, Volume 59, Issue 3,Pages <nobr>203

This article is cited in 14 papers

Effect of thermal treatment on mechanical and microstructural properties of the welded joint of the Al–Mg–Li alloy obtained by laser-assisted welding

A. M. Orishich^a, A. G. Malikov^a, E. V. Karpov^ba, N. A. Pavlov^a, I. S. Mesenzova^a

^a Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
^b Lavrentyev Institute of Hydrodynamics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia

Abstract: Laser-assisted welding of the 1420 alloy of the Al–Mg–Li system is experimentally studied for the purpose of its optimization. Various regimes of thermal treatment of non-detachable joints obtained by means of laser welding are considered. Thermal treatment modes that allow significant enhancement of the welded joint density as compared to the as-received alloy are chosen. The ultimate normalized elongation of samples after aging is found to decrease by a factor of 3.

Keywords: laser welding, Al–Li alloy, hardening, artificial aging, strength, plasticity, microstructure, phase composition.

UDC: 621.791.725

Received: 26.02.2018

DOI: 10.15372/PMTF20180321