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http://dx.doi.org/10.5781/KWJS.2010.28.3.036

Characteristics of Dissimilar CO2 Laser Welding for High Mn Steel and Low Carbon Steel  

Jeong, Bo-Young (Technical Research Lab. POSCO)
Han, Tae-Kyo (Technical Research Lab. POSCO)
Publication Information
Journal of Welding and Joining / v.28, no.3, 2010 , pp. 36-41 More about this Journal
Abstract
High Mn steel has been developed for automotive applications since the steel has an excellent combination of strength and ductility. However, from the viewpoint of welding, high Mn steel has a few problems related to its chemical composition. This paper describes characteristics of dissimilar $CO_2$ laser welding for expanding application of high Mn steel. From this work it was cleared that dissimilar laser welded joint between high Mn steel and carbon steel had poor formability due to the formation of martensite within weld metal. In order to improve ductility of welded joint, the method of controlling the dilution ratio of high Mn steel was suggested.
Keywords
High Mn steel; $CO_2$ Laser welding; Dissimilar welding; Formability;
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  • Reference
1 Y.G. Kim, T.W. Kim and S.B. Hong, Proc. of ISATA, Aachen (1993), 269
2 T.W. Kim, S.H. Park and Y.G. Kim, Materia Japan, 36(1997), 502-504   DOI
3 L. Remy, A. Pineau, Material Sci. Eng., 28 (1997) 99
4 T.W. Kim, J.K. Han : Patent WO 93/13233 Austenitic High Manganese Steel Having Superior Formability, Strength and Weldability, and Manufacturing Process Therefore, 1991
5 O. Graessel, G. Frommeyer, Material Sci. Tech., 14 (1998), 1213   DOI   ScienceOn
6 D. Cornette, P. Cugy, A. Hildenbrand, M. Bouzekri and G. Lavato : Ultra High Strength FeMn TWIP Steels for Automotive Safety Parts, SAE Technical Paper, Detroit 2005, 1 (2005), 1327