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http://dx.doi.org/10.5695/JKISE.2015.48.6.335

Characteristics of GMA Weld Zone on TiO2 Different Component Flux Cored Wire for S500 Grade Steel  

Yoo, Cheol (Technical Institute of Hyundai Welding Co., LTD.)
Ko, Young-Bong (Korea Testing & Research Institute (KTR))
Park, Kyeung-Chae (Dept. of Materials Science and Metallurgical Engineering, Kyungpook National University)
Publication Information
Journal of the Korean institute of surface engineering / v.48, no.6, 2015 , pp. 335-342 More about this Journal
Abstract
Recently, the production of oil and gas at the arctic ocean and offshore has been growing. Accordingly, S500 steel with the high tensile strength and excellent toughness has been used and flux cored wire that can be welded to the S500 has been required. In this study, we carried out observation of microstructures, mechanical properties and CTOD (crack tip openning displacement) in the weld zone that GMA (gas metal arc) welded with different component of $TiO_2$ flux core wire (the main components, rutile or Ti-slag) for S500 steel. Weld zone produced with Ti-slag flux cored wire has formed a enough acicular ferrite and shown excellent impact toughness at $-40^{\circ}C$, tensile strength at room temperature and CTOD at $-20^{\circ}C$. As a result, the developed flux cored wire was suitable for S500 steel.
Keywords
Flux cored wire; Impact toughness; Acicular ferrite; CTOD; S500;
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  • Reference
1 The Korean Welding and Joining Society, Welding. Joining handbook(2008) 81.
2 D. W. Oh, Ph.D. thesis, Colorado School of Mines, USA (1992).
3 R. A. Ricks, P. R. Howell, G. S. Barritte, Mater. The nature of acicular ferrite in HSLA steel weld metals, Journal of Materials Science, 17 (1982) 732.   DOI
4 P. Krauklis, F. J. Barbaro, K. E. Easterling, Proc. of the Int. Conf. on Martensitic Transformations, Monterey Institute for Advanced Studies, Monterey, California, USA (1992) 439.
5 P. L. Harrison, R. A. Farrar, Mater. Sci., 16 (1981) 2218.   DOI
6 K. Yamamoto, T. Hasegawa, J. Takamura, ISIJ international, 36 (1996) 80.   DOI
7 H. K. D. H. Bhadeshia, J. W. Christian, Met. Trans. A, 21A (1990) 767.
8 G. M. Evans, Welding. Journal, 71 (1992) 447.
9 J. M. Gregg, H. K. D. H. Bhadeshia, Acta Mater., 45 (1997) 739.   DOI
10 H. J. Kim B. Y. Kang, Effect of Nonmetallic Inclusions on Acicular Ferrite KWJS Academy Jan, (2000) 75.