Abstract:
This paper describes an experimental study of the effect of temperature on the fracture of laser welds of Mg- and Cu-containing aviation aluminum alloys. The fracture of alloys and their welds under a uniaxial loading at temperatures of -60, 20, and 85∘C is investigated. It is revealed that the strength and ultimate strain of welds of Cu-containing alloys decrease as temperature rises because of the formation of immobile hot spots of localized plastic shifts. Heating and cooling suppress the Portevin–Le Chatelier effect and significantly reduce the ultimate strain of a Mg-containing alloy, even though such reduction is not observed in a weld. It is shown that, at a negative temperature, the maximum limiting lengthening of the weld of a Mg-containing alloy is achieved, while the formation of secondary cracks is activated during heating.
Keywords:
laser welding, aluminum-lithium alloy, strength, plasticity, temperature effect.
Citation:
E. V. Karpov, A. G. Malikov, A. M. Orishich, B. D. Annin, “Temperature effect on the fracture of laser welds of aviation aluminum alloys”, Prikl. Mekh. Tekh. Fiz., 59:5 (2018), 191–199; J. Appl. Mech. Tech. Phys., 59:5 (2018), 934–940
\Bibitem{KarMalOri18}
\by E.~V.~Karpov, A.~G.~Malikov, A.~M.~Orishich, B.~D.~Annin
\paper Temperature effect on the fracture of laser welds of aviation aluminum alloys
\jour Prikl. Mekh. Tekh. Fiz.
\yr 2018
\vol 59
\issue 5
\pages 191--199
\mathnet{http://mi.mathnet.ru/pmtf539}
\crossref{https://doi.org/10.15372/PMTF20180522}
\elib{https://elibrary.ru/item.asp?id=35606616}
\transl
\jour J. Appl. Mech. Tech. Phys.
\yr 2018
\vol 59
\issue 5
\pages 934--940
\crossref{https://doi.org/10.1134/S002189441805022X}
Linking options:
https://www.mathnet.ru/eng/pmtf539
https://www.mathnet.ru/eng/pmtf/v59/i5/p191
This publication is cited in the following 5 articles:
A. G. Malikov, A. A. Golyshev, I. E. Vitoshkin, “Current trends in laser welding and additive technologies (review)”, J. Appl. Mech. Tech. Phys., 64:1 (2023), 31–49
A. G. Knyazeva, “Nonstationary thermokinetic model of surface laser scanning”, J. Appl. Mech. Tech. Phys., 62:6 (2021), 1001–1007
A. G. Malikov, A. M. Orishich, I. E. Vitoshkin, E. V. Karpov, A. I. Ancharov, “Laser welding of disparate materials based on thermally hardened aluminum alloys”, J. Appl. Mech. Tech. Phys., 62:5 (2021), 842–850
A. I. Ancharov, A. G. Malikov, SYNCHROTRON AND FREE ELECTRON LASER RADIATION: Generation and Application (SFR-2020), 2299, SYNCHROTRON AND FREE ELECTRON LASER RADIATION: Generation and Application (SFR-2020), 2020, 040001
A. G. Malikov, A. M. Orishich, I. E. Vitoshkin, E. V. Karpov, HIGH-ENERGY PROCESSES IN CONDENSED MATTER (HEPCM 2020): Proceedings of the XXVII Conference on High-Energy Processes in Condensed Matter, dedicated to the 90th anniversary of the birth of RI Soloukhin, 2288, HIGH-ENERGY PROCESSES IN CONDENSED MATTER (HEPCM 2020): Proceedings of the XXVII Conference on High-Energy Processes in Condensed Matter, dedicated to the 90th anniversary of the birth of RI Soloukhin, 2020, 030025
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