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http://dx.doi.org/10.3365/KJMM.2012.50.6.433

Strength Change in Ultra Low Carbon Steel due to Carburizing Heat Treatment for Hot Press Forming  

Kang, Soo Young (Dep. of Metalluygical & Material Engineering, Inha Technical College)
Publication Information
Korean Journal of Metals and Materials / v.50, no.6, 2012 , pp. 433-438 More about this Journal
Abstract
Strength change in ultra low carbon steel carburized at $880^{\circ}C$ and $930^{\circ}C$ for 10, 30, 60 and 120 minutes was investigated. The results were analyzed by a tensile test, chemical composition analysis, optical microscopy and scanning electron microscopy. Stress in the 0.5% strain specimen in the tensile test increased as the time treated at $880^{\circ}C$ and $930^{\circ}C$ increased, because the carbon diffusion layer and the martensite of the specimen increased with increasing treatment time. Martensite was found in the ferrite region in the specimen treated at $880^{\circ}C$, which is attributed to grain boundary diffusion.
Keywords
HPF (hot press forming); strength; stress; ultra low carbon steel; carburizing heat treatment;
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  • Reference
1 S. Y. Kang, J. S. Lee, J. H. Kim, H. K. Lee, and K. N. Lee, Trans. Mater. Proc. 5, 263 (1996).
2 H. S. Kim, M. H. Seo, S. J. Kim, S. C, Baik, W. J. Bang, and H. R. Lee, J. Kor. Inst. Met. & Mater. 9, 1076 (2001).
3 M. Shibata and M. Oonishi, SAE No 980550.
4 M. Shibata and K. Makino, Materials Japan, 37, 525 (1998).   DOI
5 D. H. Lee, C. S. Yoon, and J. D. Lim, J. Kor. Soc. Heat Treatment, 17, 73 (2004).
6 J. H. Lee and W. C. Jeong, J. Kor. Soc. Heat Treatment 23, 301 (2010).
7 S. W. Han, J. Kor. Inst. Met. & Mater. 1, 47 (1978).
8 G. W. Bang, J. Kor. Soc. Heat Treatment 1, 55 (1988).
9 Takeshi Naitoh, J. Kor. Soc. Heat Treatment 12, 179 (1999).
10 B. H. Jung, J. Kor. Soc. Heat Treatment 23, 34 (2010).