The Paton Welding Journal, 2002, №02

2002 №02 (01)

2002 №02 (03)

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The Paton Welding Journal, 2002, #2, 6-13 pages

Effect of microstructural transformations on redistribution of hydrogen in fusion welding of structural steels

V.I. Makhnenko¹, T.V. Korolyova¹, I.G. Lavrinets²

¹E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.
²R&PC «Korba», Bucha, Kyiv District, Ukraine

Abstract
Kinetics of distribution of hydrogen in the HAZ metal formed in welding of a root butt joint in structural steel of the A-508 type was investigated by numerical methods. The effect of chemical composition of steel and kinetics of microstructural transformations in the melting zone during welding on a local distribution of hydrogen is shown.
Keywords: fusion welding, microstructural transformations, hydrogen concentration, reversible and irreversible traps

References

1. Hrivnyak, I. (1984) Weldability of steels. Moscow: Mashinostroyeniye.
2. Pokhodnya, I.K. (1998) Problems of welding of highstrength low-alloy steels. In: Modem material science of XXI century Kyiv: Naukova Dumka.
3. Oates, W.R., Saitta, A.M. (1998) Welding handbook. 8th ed., Vol. 4, Materials and applications, Part 2. Miami: AWS.
4. Michailov, V.G., Thomas, K., Wohlfahrt, H. (1996) Numerische Simulation der Wasserstoffverteilung in mehrlagigen SchweiBverbindungen. Schweiften und Schneiden, 48, 47-50.
5. Yorioka, N., Oshita, S., Nakamura, H. et al. (1980) An analysis of effects of microstructure, strain and stress on the hydrogen accumulation in the weld heat affected zone. IIW Doc. IX-1161-80.
6. Velkov, K., Palazov, A. (1983) On modeling of hydrogen distribution in connection with the formation of cold cracks in welding. In: Proc, of If Symp. of СМЕЛ on Application of Mathematical Methods to Study the Weldability. Sofia.
7. Makhnenko, V.I., Demchenko, V.F., Ryabchuk, T.G. (1983) Calculation of diffusion of gases, produced pressures and stresses near micropores in weld metal and heat affected zone. Ibid.
8. Seyffarth, P., Kasatkin, O. (1982) Calculation of structural transformation in the welding process. IIW Doc. IX-82.
9. Jon, J.C., Saiminen, A.S., Sun, Z. (1996) Process diagrams for laser beam welding of carbon manganese steels. Welding J., July, 225-232.
10. Makhnenko, V.I., Velikoivanenko, E.A., Makhnenko, O.V. et al. (2000) Investigation of effect of phase transformation on residual stresses in circumferential welding of pipes. The Paton Welding J., 5, 2-7.
11. Taljat, B., Zacharia, T., Wang, X-L. et al. (1998) Numerical analysis of residual stress distribution in tubes with spiral weld cladding. Welding J., August, 328-335.
12. Beres, L. (1998) Proposed to Shaeffler diagram for chrome equivalents and carbon for more accurate prediction of martensite content. Ibid., July, 273-276.
13. Seyffarth, P., Meyer, B., Scharff, A. (1992) Grosser Atlas Schwei-ZTU-Schaubilder. Diisseldorf: DVS-Verlag.

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Suggested Citation

V.I. Makhnenko, T.V. Korolyova, I.G. Lavrinets (2002) Effect of microstructural transformations on redistribution of hydrogen in fusion welding of structural steels. The Paton Welding J., 02, 6-13.

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