Abstract
This study investigates low-temperature toughness of the offshore steel with two different austempering heat treatments. Toughness of upper bainite is significantly lower than that of lower bainite. Low impact toughness of the upper bainite is caused by the presence of martensite–austenite (MA) and increasing the amount of low-angle lath boundaries in upper bainite package. EBSD equipped in the SEM demonstrates an effective approach to analyze the misorientation angle of lath boundaries in upper bainite packet.
References
S. K. Dhua, D. Mukerjee and D. S. Sarma: Metall. Mater. Trans., 2001, vol. 32A, pp. 2259-2270.
Norsok Standard, Material Data Sheets for Structural Steel, Rev. 3, 2000, Norway Technology Center, Oslo, Norway.
B. Hwang, C. G. Lee and S. J. Kim: Metall. Mater. Trans., 2011, vol. 42A, pp. 717-728.
S. S. Kang, A. Bolouri and C. G. Kang: Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials Design and Applications, 2012, vol. 226, pp. 242-251.
N. Isasti, D. Jorge-Badiola, M. Taheri and P. Uranga: Metall. Mater. Trans., 2014, vol. 45A, pp. 4972-4982.
P. Mohseni, J. K. Solberg, M. Karlsen, O. M. Akselsen and E. Ostby: Metall. Mater. Trans., 2014, vol. 45A, pp. 384-94.
N. Huda, A. R. H. Midawi, J. Gianetto, R. Lazor and A. P. Gerlich: Mater. Sci. Eng., 2016, vol. 662A, pp. 481-491.
S. Y. Han, S. Y. Shin, S. Lee, N. J. Kim, J. H. Bae and K. Kim: Metall. Mater. Trans., 2010, vol. 41A, pp. 329-340.
H.K. Sung, S. Lee and S.Y. Shin: Metall. Mater. Trans., 2014, vol. 45A, pp. 2001-2013.
X. Li, Y. Fan, X. Ma, S. V. Subramanian and C. Shang: Mater Design, 2015, vol. 67, pp. 457-463.
X. Li, X. Ma, S. V. Subramanian, C. Shang and R. D. K. Misra: Mater. Sci. Eng., 2014, vol. 616A, pp. 141-47.
Y. M. Kim, S. Y. Shin, H. Lee, B. Hwang, S. Lee and N. J. Kim: Metall. Mater. Trans., 2007, vol. 38A, pp. 1731-1742.
T. Furuhara, H. Kawata, S. Morito and T. Maki: Mater. Sci. Eng., 2006, vol. 431A, pp. 228-236.
W. L. Costin, O. Lavigne and A. KotouSov: Mater. Sci. Eng., 2016, vol. 663A, pp. 193-203.
H. Kuhn, and D. Medlin, ASM Handbook, Volume 8 Mechanical Testing and Evaluation, 2000, ASM International, Materials Park, USA.
J-M Haudin, A. Carin, M. Vincent, N. Amouroux, G. Bellet, F. Montezin, Int. J. Mater. Form., 2010, vol. 3, pp. 225-231.
A. Lambert-Perlade, A.F. Gourgues and A. Pineau: Acta Mater., 2004, vol. 52, pp. 2337-2348.
A. Lambert-Perlade, A.F. Gourgues, J. Besson, T. Sturel and A. Pineau: Metall. Mater. Trans., 2004, vol. 35A, pp. 1039-1053.
C. Hofer, F. Winkelhofer, H. Clemens and S. Primig: Mater. Sci. Eng., 2016, vol. 664A, pp. 236-246.
X. L. Wang, X.M. Wang, C. J. Shang and R. D. K. Misra: Mater. Sci. Eng., 2016, vol. 649A, pp. 282-292.
L. Lan, X. Kong, C. Qiu and D. Zhao: Mater Design, 2016, vol. 90, pp. 488-498.
The authors gratefully acknowledge the financial support for this research provided by the Ministry of Science and Technology (MOST), Taiwan, under Grant Number MOST 103-2622-E-006-037 and 104-2622-E-006-001.
Author information
Authors and Affiliations
Corresponding author
Additional information
Manuscript submitted February 17, 2016.
Rights and permissions
About this article
Cite this article
Yu, C., Yang, T.C., Huang, C.Y. et al. Low-Temperature Toughness of the Austempered Offshore Steel. Metall Mater Trans A 47, 4777–4783 (2016). https://doi.org/10.1007/s11661-016-3654-9
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11661-016-3654-9