The Paton Welding Journal, 2012, №01



2012 №01 (12)

2012 №01 (02)

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The Paton Welding Journal, 2012, #1, 2-6 pages  

EFFICIENCY OF ELECTRODYNAMIC TREATMENT OF ALUMINIUM ALLOY AMg6 AND ITS WELDED JOINTS

L.M. LOBANOV¹, N.A. PASHCHIN¹, A.V. CHERKASHIN¹, O.L. MIKHODUJ¹ and I.P. KONDRATENKO²

¹E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
²Institute of Electrodynamics, NASU, Kiev, Ukraine
 
 
Abstract
The evaluation of parameters of pulsed current and dynamic pressure at electrodynamic treatment was performed, based on the developed experimental procedure. The influence of charge voltage and capacitance of capacitors on relative effectiveness of electrodynamic treatment was studied. It was established that maximum values of pulsed current and its increment rate are directly dependent on applied charge voltage, while the rate of dynamic pressure increment is the power function of a pulsed current.
 
 
Keywords: welded joints, aluminium alloy, electrodynamic treatment, primary stresses, decrease of resistance to deformation, relative efficiency of treatment, pulsed current, dynamic pressure, charge voltage, capacitance of capacitors, welding stresses
 
 
Received:                12.10.11
Published:               28.01.12
 
 
References
1. Lobanov, L.M., Pashchin, N.A., Loginov, V.P. et al. (2005) Application of electric pulse treatment of structural elements to extend their service life (Review). The Paton Welding J., 11, 19-23.
2. Lobanov, L.M., Pashchin, N.A., Loginov, V.P. et al. (2007) Change of the stress-strain state of welded joints of aluminium alloy AMg6 after electrodynamic treatment. Ibid., 6, 7-14.
3. Lobanov, L.M., Pashchin, N.A., Loginov, V.P. et al. (2007) Effect of electrodynamic treatment on stressed state of welded joints on steel St3. Ibid., 7, 6-8.
4. Lobanov, L.M., Pashchin, N.A., Skulsky, V.Yu. et al. (2006) Influence of electrodynamic treatment on the stressstrain state of heat-resistant steels. Ibid., 5, 8-11.
5. Lobanov, L.M., Pashchin, N.A., Loginov, V.P. (2010) Features of structure formation of aluminium alloys AMg5 under the effect of electric current pulses. Visnyk Ukr. Materialozn. Tovarystva, 3, 33-42.
6. Lobanov, L.M., Makhnenko, V.I., Pashchin, N.A. et al. (2007) Features of formation of plastic deformations at electrodynamic treatment of welded joints of St3 steel. The Paton Welding J., 10, 7-11.
7. Lobanov, L.M., Pashchin, N.A., Loginov, V.P. et al. (2010) Effect of electric pulse treatment on residual change in shape of thin-sheet welded structures (Review). Ibid., 3, 10-13.
8. Antonov, Yu.A., Ragozin, Yu.I. (2001) Pulse method of residual stress relief. Fizika i Khimiya Obrab. Materialov, 3, 91-95.
9. Lobanov, L.M., Pashchin, N.A., Loginov, V.P. et al. (2011) Influence of repeated loading on the efficiency of electrodynamic treatment of aluminium alloy AMg6 and its welded joints. The Paton Welding J., 4, 2-5.
10. Stepanov, G.V., Babutsky, A.I., Mameev, I.A. (2004) Nonstationary stress-strain state in long bar induced by high density electric current pulses. Problemy Prochnosti, 4, 60-67.
11. Belova, M.M., Protsenko, S.S., Ivanov, A.V. (1987) Dynamics of deformation of elastic-plastic layer in pulse power generation. Ibid., 12, 87-91.

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