Browse > Article
http://dx.doi.org/10.3740/MRSK.2017.27.11.636

Microstructure Characteristics and Identification of Low-Carbon Steels Fabricated by Controlled Rolling and Accelerated Cooling Processes  

Lee, Sang-In (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
Hong, Tae-Woon (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
Hwang, Byoungchul (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
Publication Information
Korean Journal of Materials Research / v.27, no.11, 2017 , pp. 636-642 More about this Journal
Abstract
In the present study the microstructure of low-carbon steels fabricated by controlled rolling and accelerated cooling processes was characterized and identified based on various microstructure analysis methods including optical and scanning electron microscopy, and electron backscatter diffraction(EBSD). Although low-carbon steels are usually composed of ${\alpha}-ferrite$ and cementite($Fe_3C$) phases, they can have complex microstructures consisting of ferrites with different size, morphology, and dislocation density, and secondary phases dependent on rolling and accelerated cooling conditions. The microstructure of low-carbon steels investigated in this study was basically classified into polygonal ferrite, acicular ferrite, granular bainite, and bainitic ferrite based on the inverse pole figure, image quality, grain boundary, kernel average misorientation(KAM), and grain orientation spread(GOS) maps, obtained from EBSD analysis. From these results, it can be said that the EBSD analysis provides a valuable tool to identify and quantify the complex microstructure of low-carbon steels fabricated by controlled rolling and accelerated cooling processes.
Keywords
low-carbon steel; microstructure; electron backscatter diffraction(EBSD); identification; controlled rolling; accelerated cooling;
Citations & Related Records
연도 인용수 순위
  • Reference
1 K. B. Kang, J. S. Kang, J. Y. Yoo, D. H. Seo, I. S. Suh and G. B. An, Advanced Steels (2011) 281.
2 Atlas for Bainitic Microstructures, ISIJ, 1, Tokyo (1992).
3 S. W. Thompson, D. J. Colvin and G. Krauss, Metall. Trans. A, 21, 1493 (1990).   DOI
4 B. L. Bramfitt and J. G. Speer, Metall. Trans. A, 21, 817 (1990).   DOI
5 J. S. Kang, J-B Seol and C. G. Park, Mater. Charact., 79, 110 (2013).   DOI
6 T. Araki, M. Enomoto and K. Shibata, Mate. Trans. JIM, 32, 729 (1991).   DOI
7 D. Quidort and Y. Brechet, Scr. Mater., 47, 151 (2002).   DOI
8 S. S. Babu and H. K. D. H. Bhadeshia, Mater. Trans. JIM, 32, 679 (1991).   DOI
9 H. K. D. H. Bhadeshia and J. W. Christian, Metall. Trans. A, 21, 767 (1990).   DOI
10 R. A. Farrar and P. L. Harrison, J. Mater. Sci., 22, 3812 (1987).   DOI
11 A. Ramazani, K. Mukherjee, U. Prahl and W. Bleck, Metall. Mater. Trans. A, 43, 3850 (2012).   DOI
12 A. Kundu and D. P. Field, Mater. Sci. Eng. A, 667, 435 (2016).   DOI
13 G. Krauss and S.W. Thompson, ISIJ, 35 (1995) 937.   DOI
14 R. K. Dutta, R. H. Petrov, R. Delhez, M. J. M. Hermans, I. M. Richardson and A. J. Bottger, Acta Meter., 61, 1592 (2013).   DOI
15 O. Kwon and K. J. Lee, J. Korean Inst. Met. Mater., 36, 1866 (1998).
16 B. Karthik, R. Veerababu and D. V. V. Satyanarayana, Met. Mater. Inter., 22, 413 (2016).   DOI
17 G. E. Dieter, Mechanical Metallurgy, SI Metric Edition, New York, McGraw-hill (1989). 184.
18 B. Hwang, J. H. Shim, M. G. Lee, J. Lee, J. H. Jung, B. S. Kim and S. B. Won, Korea J. Met. Mater., 54, 862 (2016).   DOI
19 J. Y. Koo, M. J. Luton, N. V. Bangaru, R. A. Petkovic, D. P. Fairchild, C. W. Petersen, H. Asahi, T. Hara, Y. Terada, M. Sugiyama, H. Tamehiro, Y. Komizo, S. Okaguchi, M. Hamada, A. Yamamoto and I. Takeuchi, Proc. 13th Int. Offshore and Polar Eng. Conf., ISOPE, Hawaii, USA, p. 10 (2003).
20 US Patent Pub. No. 20070193666.
21 C. Zener and J. H. Holloman, J. Appl. Phys., 15, 22 (1944).   DOI
22 E. A. Simielli, S. Yue and J. J. Jonas, Met. Trans. A, 23, 597 (1992).   DOI
23 M. J. Luton, R. Dorvel and R. A. Petkovic, Met. Trans. A, 11, 411 (1980).   DOI
24 K. J. Irvine, F. B. Pickering and T. Gladman, J. Iron and Steel Inst., 205, 161 (1967).
25 T. Gladman and D. Dulieu, Met. Sci., 8, 167 (1974).   DOI
26 T. Gladman, I. D. McIvor and F. B. Pickering, J. Iron and Steel Inst., 209, 380 (1971).
27 P. M. Kelly, A. Jostsons and R. G. Blake, Acta Metall. Mater., 38, 1075 (1990).   DOI
28 S. Matsuda and N. Okumura, Trans. Iron Steel Inst. Jpn., 18, 198 (1978).
29 I. Tamura, H. Sekine and T. Tanaka, Thermomechanical processing of high-strength low-alloy steels, Butterworth-Heinemann (2013).
30 W. B. Morrison, J. Iron and Steel Inst., 210, 618 (1972).
31 T. Tanaka, J. Soc Materials Sci. Japan, 30, 611 (1980).
32 R. A. P. Djaic and J. J. Jonas, Metall. Trans., 4, 621 (1973).   DOI
33 J. J. Jonas and M. G. Akben, Metall. Forum, 4, 92 (1981).
34 J. J. Jonas and I. Weiss, Met. Sci., 13, 238 (1979).   DOI
35 M. Umemoto, I. Yamura and T. Osuka, Tetsu-to-Hagane, 68, 1384 (1982).
36 R. W. Vanderbeck, Weld. J., 37, 114 (1958).
37 W. Barr and C. F. Tipper, J. Iron and Steel Inst., 157, 223 (1947).
38 W. J. Berry, Iron Coal Trade Rev., 66, 900 (1928).
39 N. Ishikawa, K. Yasuda, H. Sueyoshi, S. Endo, H. Ikeda, T. Morikawa and K. Higashida, Acta Meter., 97, 257 (2015).   DOI
40 K. Nagai, Y. Shinohara, S. Sakamoto, E. Tsuru and H. Asahi, Proc. 19th Int. Offshore and Polar Eng. Conf., ISOPE, Osaka, Japan, p 56 (2009).
41 H. K. Sung, D. H. Lee, S. Lee, H. S. Kim, Y. Ro, C. S. Lee, B. Hwang and S. Y. Shin, Metall. Mater. Trans. A, 47, 2726 (2016).   DOI
42 K. Yasuda, H. Sueyoshi, N. Ishikawa, T. Morikawa and K. Higashida, Proc. 25th Int. Offshore and Polar Eng. Conf., ISOPE, Hawaii, USA, p. 639 (2015).
43 H. K. Sung, D. H. Lee, S. Y. Shin, S. Lee, Y. Ro, C. S. Lee and B. Hwang, Metall. Mater. Trans. A, 46, 3989 (2015).   DOI
44 T. Hara, Y. Shinohara, Y. Terada, H. Asahi and N. Doi, Proc. 19th Int. Offshore and Polar Eng. Conf., ISOPE, Osaka, Japan, (2009). 73.