Influence of the Parameters of Electrodynamic Actions on the Stressed State of Welded Joints of Sheets of AMg6 Alloy

Influence of the Parameters of Electrodynamic Actions on the Stressed State of Welded Joints of Sheets of AMg6 Alloy

We study the influence of the parameters responsible for different durations of the electrodynamic actions on the decrease in residual stresses in welded joints of the sheets made of AMg6 aluminum alloy after electrodynamic treatment. It is discovered that as the time of electrodynamic action increa...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) Vol. 53; no. 1; pp. 1 - 6
Main Authors: Lobanov, L. М., Pashchin, N. А., Mikhodui, O. L., Cherkashin, A. V.
Format: Journal Article
Language:English
Published: New York Springer US 01-07-2017
Springer
Springer Nature B.V
Subjects:
Alloys
Aluminum alloys
Aluminum base alloys
Characterization and Evaluation of Materials
Chemistry and Materials Science
Heat treatment
Inductance
Materials Science
Ohmic dissipation
Residual stress
Sheets
Solid Mechanics
Specialty metals industry
Structural Materials
Welded joints
residual welding stresses
duration of electrodynamic action
electrodynamic treatment
aluminum alloy
pulse of electric current
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Summary:We study the influence of the parameters responsible for different durations of the electrodynamic actions on the decrease in residual stresses in welded joints of the sheets made of AMg6 aluminum alloy after electrodynamic treatment. It is discovered that as the time of electrodynamic action increases as a result of the increase in the inductance of the discharge contour in the course of electrodynamic treatment performed for constant amplitude values of impulsive electric currents, the period of decay of impulsive electric current is longer than the period of its growth. In this case, the efficiency of electrodynamic treatment increases. It is established that, for the duration of electrodynamic treatment t Σ ≥ 4.5 msec, the decrease in residual stresses is determined both by the intensity of the electrodynamic influence and by the local heat treatment as a result of the Joule heating of the surface of the plate.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-017-0035-5