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http://dx.doi.org/10.3740/MRSK.2004.14.1.001

Effect of Coating Weight on the Laser Weldability in the Welding of Aluminized Steels  

Kim Ki Chol (포항산업과학연구원)
Cha Joon Ho (포항산업과학연구원)
Publication Information
Korean Journal of Materials Research / v.14, no.1, 2004 , pp. 1-8 More about this Journal
Abstract
Laser weldability of aluminized steels for deep drawing application has been investigated. Test coupons for Nd:YAG laser welding and $CO_2$ laser welding were prepared trom the commercial steels. According to the test results, total penetration and back bead width of aluminized steels were sensitive to the welding conditions. Bead width at the half thickness of the overlap joint, however, was rather constant. Laser weldability of aluminized steels was superior to that of zinc coated steel. Weld microstructure revealed that overlap zone adjacent to the fusion line was filled with coated materials, which was thought to be desirable to protect weld from crevice corrosion. The aluminum coated materials was also found in the weld metal. Practically no spattering was observed in the laser welding of aluminized steels even when the welding was performed without joint gap. In the welding of zinc coated steel, however, spattering was so severe that it was difficult to get the acceptable weld. Bead quality of aluminized steel laser weld was smooth and stable.
Keywords
Coated steel; Aluminized steel; Galvanealed steel; Laser welding;
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  • Reference
1 K. C. Kim, J. H. Cha and J. Y. Lee, Proc. Korean Welding Society, 40, 99 (2003)
2 K. Kobylanska-Szkaradek, Welding Jour., Mar., 110s (1998)
3 Y. F. Tzeng, Welding Jour., Jul., 238s (1999)
4 I. S. Chang and B. S. Suh, Proc., High Density Energy Committee(HiDEC), Korean Welding Society, Dec, 9 (2000)
5 P. D. Clements, Doctoral dissertation, School of Eng., Univ. of Wales, Dec, 19 (1990)
6 Japanese Pat. No. 10-230363, (1988)
7 Japanese Pat. No. 7-157883, (1995)
8 Y. Izawa, A. Teramoto and S. Fukuda, Proc. Japan Welding Society, 61, 242 (1997)
9 Japanese Pat. No. 6-158221, (1994)
10 Japanese Pat. No. 10-230363, (1998)
11 Japanese Pat. No. 7-157883, (1995)
12 Japanese Pat. 10-272582, (1998)
13 L. M. Storojeva, Corrosion Prevention & Control, Oct., 119 (1997)
14 W. Warnecke, J. Froeber and R. Bode, SAE Tech. Paper Series, 1999-01-0022, (1999)
15 H. Takechi, ISIJ, 78(3), 339 (1992)
16 A. Obe, Revival Series, 4(6), 393 (1970)