The Paton Welding Journal, 2007, №06

2007 №06 (11)

2007 №06 (02)

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

Effect of energy input on ductile properties of flash butt welded joints in steel X70

S.I. Kuchuk-Yatsenko, G.M. Grigorenko, D.P. Novikova, V.F. Zagadarchuk, G.K. Kharchenko, S.G. Grigorenko, I.I. Alekseenko

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

Abstract
The effect of energy input in flash butt welding of pipes of steel 10G2FB on ductile properties of welded joints was investigated. It is shown that impact toughness of metal of the welded joints is determined by its structural state and grain size. It is recommended to reduce the energy input of the welding process to achieve consistently high ductile properties of the welded joints, as this provides formation of fine-grained two-phase structure in the weld metal, consisting of the MAC-phase in the ferritic matrix.
Keywords: flash butt welding, energy input, low-alloy steel, microstructure, grain, MAC-phase, impact toughness

References

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Suggested Citation

S.I. Kuchuk-Yatsenko, G.M. Grigorenko, D.P. Novikova, V.F. Zagadarchuk, G.K. Kharchenko, S.G. Grigorenko, I.I. Alekseenko (2007) Effect of energy input on ductile properties of flash butt welded joints in steel X70. The Paton Welding J., 06, 2-6.

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