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http://dx.doi.org/10.5695/JKISE.2012.45.5.212

The Effect of Hydrogen in Automobile High Strength Steel Sheets Charged with Hydrogen by Using Electrochemical Method  

Park, Jae-Woo (Dept. of New Energy Engineering, The Graduate School of Energy & Environment, SNUST)
Kang, Kae-Myung (Dept. of Materials Science & Engineering, SNUST)
Publication Information
Journal of the Korean institute of surface engineering / v.45, no.5, 2012 , pp. 212-217 More about this Journal
Abstract
High strength steel sheets used for automobile outer-panels have been intensively studied for developing a lightweight automobile under a strong pressure of the requirements for enhancing the mileage and energy saving in production of automobile parts. It is known that high strength steels are susceptible to hydrogen embrittlement, The susceptibility to hydrogen embrittlement increases with increasing its strength. However, the effect of hydrogen on the fracture behavior of high strength steels, though investigated extensively, has not been fully understood. In this paper, hydrogen was charged with 590DP steels by electrochemical method and its content was measured by hydrogen determinator with the different charging conditions. It was shown that the SP energy and maximum load decreased with increasing charging time. The results of SEM-fractography investigation for the hydrogen contained samples showed that a small portion of dimples on cleavage-fractured surface were observed and the size of the dimples were decreased with increasing hydrogen charging time.
Keywords
Automobile outer panels; Hydrogen charging; Small punch test; Hydrogen embrittlement; DP steel;
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Times Cited By KSCI : 4  (Citation Analysis)
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1 R. O. Pocha, T. M F. Melo, E. V. Peroloma, D. B. Santos, Mater. Sci, Eng., 391A (2005) 296.
2 K. Yokoyama, M. Tomita, J. Sakai, Acta Mater., 57 (2009) 1875.   DOI
3 K. M. Kang, J. W. Park, Kor. J. Mater. Res., 20(11) (2010) 581.   DOI   ScienceOn
4 J. Watanabe, T. Takai, M. Nagumo, J. Iron Steel Inst. Jpn., 82 (1996) 947.   DOI
5 C. H. Yang, M. F. Huang, J. Nucl. Mater., 335 (2004) 395.
6 Standard Test Method for Ball Punch Deformation of Metallic Sheet Material, ASTM E643-84 (2000).
7 G. E. Lucas, Metall. Mater. Trans., 21A (1990) 1105.
8 J. U. Choi, J. W. Park, K. M. Kang, Kor. J. Mater. Res., 21(11) (2011) 581.   DOI   ScienceOn
9 J. W. Park, K. M. Kang, Kor. J. Mater. Res., 22(1) (2012) 29.   DOI   ScienceOn
10 J. W. Park, K. M. Kang, KIGAS, 14(6) (2010) 38.
11 C. C. Lee, J. W. Park, K. M. Kang, Kor. Inst. Surf. Eng., 45(3) (2012) 128.
12 T. Zhang, W. Chu, K. Gao, L. Qiao, Mater. Sci. Eng. A, 347 (2003) 291.   DOI
13 K. Murakami, N. Yabe, ASME, 6 (2006) 563.