The Paton Welding Journal, 2007, №02

2007 №02 (11)

2007 №02 (02)

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The Paton Welding Journal, 2007, #2, 2-6 pages

Influence of electrodynamic treatment on the features of fracture micromechanism of welded joints on aluminuim alloy AMg6

L.M. Lobanov, N.A. Pashchin, V.P. Loginov, T.G. Taranova, V.A. Kostin, A.A. Chajka

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
On the basis of fractographic analysis the peculiarities of the mechanisms of stressed state relaxation and microfracture of base metal samples and welded Joints of AMg6 alloy were studied under the conditions of electrodynamic treatment (EDT) of the material by current pulses. It was determined that at EDT of butt welded Joint HAZ the amount of the ductile fracture component increases. At the same time, a non-conservative plastic slip deformation is observed in the treated material that results in strain hardening of AMg6 alloy butt welded Joint structure by 35–40 % compared with untreated material.
Keywords: electrodynamic treatment, aluminium alloys, welded joints, current pulses, stress-strain state, toughness, duc¬tility, brittleness, microhardness, fractographic studies, fracture micromechanism, plastic deformations, slip planes, torsional slip

References

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Suggested Citation

L.M. Lobanov, N.A. Pashchin, V.P. Loginov, T.G. Taranova, V.A. Kostin, A.A. Chajka (2007) Influence of electrodynamic treatment on the features of fracture micromechanism of welded joints on aluminuim alloy AMg6. The Paton Welding J., 02, 2-6.

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