Abstract
Microstructural evolution in weld metals was in-situ observed through utilizing a laser scanning confocal microscope at two cooling rates. The specimens with various nickel contents were adopted for the observation. In the specimen with low fraction of Ni (⩽ 2 wt. % ), granular bainite microstructure (i.e. broad surface relief) transformation from intragranular nucleation site was in-situ observed, while, lath bainite microstructure originating from grain boundary of austenite was in-situ observed for specimens with high mass percentage of Ni (⩾ 4 wt. % ). With increasing nickel content, the transformation temperature dropped. The prior austenite grain size was initially depressed and subsequently coarsened dramatically with the addition of Ni. The microstructure difference was ascribed to various nucleation sites and growth direction in the matrix. On account of those observations, not only the chemical component, cooling rate and microstructure were systematically correlated, but also the microstructural evolution was definite.
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References
A. Barbacki, J. Mater. Process. Technol. 53 (1995) 57–63.
H. K. D. H. Bhadeshia, J. W. Christian, Metall. Trans. A 21 (1990) 767–797.
H. K. D. H. Bhadeshia, Mater. Sci. Technol. 15 (1999) 22–29.
A. Lambert-Perlade, A. F. Gourgues, A. Pineau, Acta Mater. 52 (2004) 2337–2348.
S. G. Park, K. H. Lee, K. D. Min, M. C. Kim, B. S. Lee, Met. Mater. Int. 19 (2013) 4954–4959.
Z. Y. Zhang, R. A. Farrar, J. Mater. Sci. 30 (1995) 5581–5588.
F. G. Caballero, H. K. D. H. Bhadeshia, K. J. A. Mawella, D. G. Jones, P. Brown, Mater. Sci. Technol. 17 (2001) 512–516.
F. G. Caballero, M. K. Miller, C. Garcia-Mateo, C. Capdevila, C. Garcia de Andres, JOM 60 (2008) 16–21.
H. Y. Li, X. W. Lu, X. C. Wu, Mater. Sci. Eng. A 527 (2010) 6255–6260.
H. G. Lambers, D. Canadinc, H. J. Maier, Mater. Sci. Eng. A 541 (2012) 73–80.
S. Das, I. Timokhina, S. B. Singh, Mater. Sci. Eng. A 534 (2012) 485–494.
K. Y. Zhu, C. Oberbillig, C. Musik, Mater. Sci. Eng. A 528 (2011) 4222–4231.
Y. Komiozo, Investigation for Microstructure and Toughness of Low Carbon and Low Alloy Steel Weld Metal, Osaka University, Osaka, 1982, pp. 100–112.
H. Terasaki, Y. Komizo, M. Yonemura, T. Osuki, Metall. Mater. Trans. A 37 (2006) 1261–1266.
M. K. Kang, M. X. Zhang, M. Zhu, Acta Mater. 54 (2006) 2121–2129.
D. Zhang, H. Terasaki, Y. I. Komizo, J. Alloy. Compd. 484 (2009) 929–933.
T. Hidenori, S. Yutaro, T. Atsushi, Metall. Mater. Trans. A 45 (2014) 3554–3559.
P. Kolmskog, A. Borgenstam, M. Hillert, Metall. Mater. Trans. A 43 (2012) 4984–4988.
M. A. Quintana, S. S. Babu, J. Major, C. Dallam, M. James, in: Proceedings of the 8th International Pipeline Conference, Volume 2, IPC2010, International Petroleum Technology Institute and the Pipeline Division, Alberta, Canada, 2010, pp. 599–608.
G. Xu, F. Liu, L. Wang, H. J. Hu, Scripta Mater. 68 (2013) 833–837.
H. Terasaki, Y. Komizo, Sci. Technol. Weld Join. 11 (2006) 561–566.
T. Ko, S. A. Cottrell, J. Iron Steel Inst. 172 (1952) 307–312.
A. J. Craven, K. He, L. A. J. Garvie, T. N. Baker, Acta Mater. 48 (2000) 3857–3868.
S. G. Hong, K. B. Kang, C. G. Park, Scripta Mater. 46 (2002) 163–168.
S. Zhao, D. L. Wei, R. B. Li, L. Zhang, Mater. Trans. 55 (2014) 1274–1279.
S. E. Offerman, N. H. van Dijk, J. Sietsma, S. Grigull, E. M. Lauridsen, L. Margulies, H. F. Poulsen, M. Th. Rekveldt, S. van der Zwaag, Science 298 (2002) 1003–1005.
J. W. Christian, The Theory of Transformations in Metals and Alloys: Part I, 3rd ed., Oxford, London, 1975.
H. K. D. H. Bhadeshia, A. R. Waugh, Acta Metall. 30 (1982) 775–784.
S. K. Ghosh, N. Bhowmik, A. Haldar, A. A. Chattopadhyay, Mater. Sci. Eng. A 527 (2010) 1082–1088.
L. Y. Lan, C. L. Qiu, D. W. Zhao, X. H. Gao, L. X. Du, J. Mater. Sci. 48 (2013) 4356–4364.
Y. Arai, T. Emi, H. Fredrilsson, H. Shibata, Metall. Mater. Trans. A 36 (2005) 3065–3074.
H. J. Hu, G. Xu, F. Liu, L. Wang, L. X. Zhou, Z. L. Xue, Trans. Mater. Heat Treat. 35 (2014) 83–87 (in Chinese).
T. Kvackaj, I. Mamuzic, ISIJ Int. 38 (1998) 1270–1276.
J. F. Lancaster, Metallurgy of Welding, 2nd ed., George & Unwin, London, 1980.
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Mao, Gj., Cao, R., Chen, Jh. et al. In-situ observation of microstructural evolution in reheated low carbon bainite weld metals with various Ni contents. J. Iron Steel Res. Int. 24, 1206–1214 (2017). https://doi.org/10.1016/S1006-706X(18)30019-0
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DOI: https://doi.org/10.1016/S1006-706X(18)30019-0