| 2007 №12 (03) | 2007 №12 (05) |
The Paton Welding Journal, 2007, #12, 19-22 pages
Effect of distribution of manganese in structural components on properties of low-alloy weld metal
V.F. Grabin, V.V. Golovko
E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
The effect of oxygen potential and alloying ability of welding fluxes on distribution of manganese in the weld metal between non-metallic inclusions MnO and solid solution Mns.s has been studied. The (MnO)/[Mns.s] ratio can be used for differential evaluation of the efficiency of alloying of the welds with manganese, allowing for a different character of its effect on strengthening of solid solution, composition of non-metallic inclusions, and structure and mechanical properties of the weld metal.
Keywords: submerged-arc welding, low-alloy steel, alloying of weld metal, macrostructure, distribution of manganese,mechanical properties
References
1. Grabin, V.F., Denisenko, A.V. (1978) Metals science of welding of low- and medium-alloy steels. Kiev: Naukova Dumka.2. Livshits, L.S., Khakimov, A.N. (1989) Metals science of welding and heat treatment of welded joints. Moscow: Mashinostroenie.
3. Court, S.A., Pollard, G. (1989) The effects of Mn and Si on the microstructure and properties of SMA steel weld metal. IIW Doc. II-A-789-89.
4. Grabin, V.F., Golovko, V.V., Solomijchuk, T.G. et al. (2003) Analysis of structural state of weld metal produced by using welding wires of the ferritic-pearlitic grade. The Paton Welding J., 8, 17–22.
5. Golovko, V.V. (2006) Interaction of metal with slag in submerged-arc welding of low-alloy steels using agglomerated fluxes: Syn. of Thesis for Dr. of Techn. Sci. Degree. Kiev.
6. ISO 14171: Welding consumables – Wire electrodes and wire-flux combinations for submerged arc welding of non alloy and fine grain steels – Classification. Introd. 01.02.2007.
7. (1986) Guidelines for the classification of ferritic steel weld metal microstructural constituents using the light microscope. Welding in the World, 24(7/8), 144–148.