Thermomechanical analysis of triangular zone cracks in vertical continuous casting slabs based on viscoelastic–plastic model

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Abstract The triangular zone cracks in 2101 duplex stainless steel produced by the vertical continuous caster have troubled company A for a long time. To simulate the temperature and thermal stress distributions in the solidification process of 2101 duplex stainless steel produced by the vertical continuous caster, a two-dimensional viscoelastic–plastic thermomechanically coupled finite element model was established by the secondary development of the commercial nonlinear finite element analysis software MSC Marc. The results show that the thermal stress on the surface reaches a maximum at the exit of the mould, and the highest thermal stresses at the centre of the wide face and the narrow face are 75 and 115 MPa, respectively. Meanwhile, the internal temperature of slab is still higher than the solidus temperature, resulting in no thermal stress. The slab shows different high-temperature strengths and suffers from different stresses at different positions; thus, the risk of cracking also varies. At a location of 6–8 m from the meniscus, the temperature of the triangular zone is 1270–1360 C and the corresponding permissible high-temperature strength is about 10–30 MPa, while the thermal stress at this time is 60 MPa, which is higher than the high-temperature strength. As a result, triangular zone cracks form easily.

Key words： Vertical continuous caster Triangular zone cracks Thermal-mechanical coupled Viscoelastic-plastic model Finite element analysis

Received: 22 August 2017 Published: 31 October 2018

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	Articles by authors
	CHENG Juan
	WU Pan-Xin
	YU Yang
	FU Jian-Xun

Cite this article:

CHENG Juan,WU Pan-Xin,YU Yang, et al. Thermomechanical analysis of triangular zone cracks in vertical continuous casting slabs based on viscoelastic–plastic model[J]. Journal of Iron and Steel Research International, 2018, 25(8): 813-820.

[1]	S. Hintikka, J. Konttinen, K. Leiviska, M. Tolvanen..[J].Steelmaking Conference Proceedings,, 1992, 75:887-891
[2]	Q.Liu, L.Z. Wang, L.G. Cao, L.Q. Zhang, M. Liang. Iron Steel Res. 17(2005) 6-9.
[3]	D.Constales, J. Kacur, R.V. Keer. Int J Numer Metheng, 53(2002) 539-565.
[4]	P.Han, X.Z. Zhang. Iron Steel Res. 14(2002) 73-76.
[5]	T.K. He. Continuous Casting. 4(2012) 73-76.
[6]	F.Q. Zhang, C. Li, Z.S. Jiang, X.H. Wang, J.M. Zhang, G.S. Zhu. Iron and Steel. 39(2004) 20-23.
[7]	J.K. Park, C.S. Li, B.G. Thomas, I.V. Samarasekera. Ironmak Steelmak. 29(2002) 359-375.
[8]	K.K. Cai, L. Shao, X.H. Lu, L.S. Lu. Iron Steel Res. 5(1993) 1-8.
[9]	J.X. Fu, J.S. Li, H. Zhang. Acta Metall Sin. 46(2010) 91-96.
[10]	J.X. Fu, J.S. Li, H. Zhang. Int J Min Met Mater. 17(2010) 723-728.
[11]	J.X. Fu, J.S. Li, H. Zhang. J Iron Steel Res Int. 17(2010) 20-24.
[12]	J.X. Fu, J.S. Li, H. Zhang. Iron Steel Res. 22(2010) 9-11.
[13]	J.X. Fu, J.S. Li, H. Zhang, X.Z. Zhang. Steelmaking. 26(2010) 62-65.
[14]	J.X. Fu, J.S. Li, H. Zhang. Sci China Technol Sc. 54(2011) 1228-1233.
[15]	J.X. Fu, W.S. Hwang, J.S. Li, S.F. Yang, Z. Hui. Steel Res Int. 82(2011) 1266- 1272.
[16]	B.Barber, B.A. Lewis, B.M. Leckenby. Ironmak Steelmak. 12(1985) 171-175.
[17]	K.Sorimachi, J.K. Ironmak Steelmak. 4(1977) 240-245.
[18]	T.Nozaki, J.I. Matsuno, K. Murata, H. Ooi, M. Kodama. Trans. Iron Steel Inst. 18(1978) 330-338.
[19]	K.H. Kim, T.J. Yeo, K.H. Oh, D.N. Lee. ISIJ Int. 36(1996) 284-289.
[20]	G.J. Davies, Y.K. Shin. The Metal Society, London, 1979.
[21]	T.W. Clyne, M. Wolf, W. Kurz. Metall Mater Trans B. 13(1982) 259-266.