FEM Simulation of the Hydrogen Diffusion in X80 Pipeline Steel During Stacking for Slow Cooling

doi:10.1007/s40195-014-0073-z

Abstract

Abstract:

The influence of temperature on the hydrogen diffusion behavior in X80 pipeline steel during stacking for slow cooling was studied using electrochemical penetration method, the temperature field and the hydrogen diffusion in this pipeline steel during stacking for slow cooling were simulated by ABAQUS finite element method (FEM) software. The results show that in this process there is a reciprocal relationship between the natural logarithm of hydrogen diffusion coefficient and temperature. The cooling rate decreases gradually with the increase of steel plate thickness. The hydrogen content is higher at high temperature (500–400 °C) than that in low temperature region (300–100 °C). The FEM simulation results are consistent with the experimental ones, and the model can be used to predict the hydrogen diffusion behavior in industrial production of X80 pipeline steel.

Key words: X80 pipeline steel, Stacking, Slow cooling, Hydrogen diffusion, Finite element method (FEM), Electrochemical penetration

Zhenyi Huang, Qi Shi, Fuqiang Chen, Yunfeng Shi. FEM Simulation of the Hydrogen Diffusion in X80 Pipeline Steel During Stacking for Slow Cooling[J]. Acta Metallurgica Sinica (English Letters), 2014, 27(3): 416-421.

Figures/Tables 8

Table 1 Chemical composition of the X80 pipeline steel (wt%)

C	Si	Mn	S	P	Al	V	Nb	Ti	Cr	Mo	Ni	Cu	Fe
0.0699	0.177	1.642	0.0018	0.085	0.268	0.0254	0.0495	0.0124	0.085	0.195	0.255	0.14	Bal.

Fig. 1 Schematic setup diagram for measuring hydrogen diffusion coefficient (1 DC regulated power supply, 2 electrochemical hydrogen permeation slot, 3 auxiliary platinum electrode, 4 bolt, 5 sample, 6 saturated calomel electrode, 7 the thermometer, 8 digital constant temperature water-bath, 9 electrochemical hydrogen permeation diffusion slot, 10 electrochemical analyzer)

Fig. 2 Curves showing hydrogen permeability characteristic in X80 pipeline steel

Table 2 Hydrogen permeability characteristic of X80 pipeline steel

T (°C)	I_max (10^-6 A)	L (mm)	D_eff (10^-5 mm² s^-1)	J (10^-13 mol mm² s^-1)	C₀ (10^-9 mol mm³)
25	2.688	1.01	6.699	1.541	2.324
30	3.462	1.03	7.439	1.985	2.748
35	4.443	1.07	8.260	2.547	3.300
40	4.912	1.09	9.021	2.816	3.403
45	5.698	1.06	9.069	3.257	3.818
50	6.368	1.07	1.005	3.651	3.872
55	8.150	1.01	1.049	4.673	4.499
60	8.391	1.06	1.309	4.811	3.896
65	10.750	1.04	1.436	6.163	4.470

Fig. 3 Relationship between hydrogen diffusion coefficient and temperature for X80 pipeline steel

Fig. 4 Relationship of the surface temperature and time on the central plate

Fig. 5 Hydrogen diffusion behavior of X80 pipeline steel of 20 mm in thickness

Fig. 6 Hydrogen diffusion behavior of X80 pipeline steel of 30 mm in thickness

References 21

[1]	H. Kin, B.N. Popov, K.S. Chen, Corros. Sci. 45, 1005(2003)
[2]	A. Caravella, N. Hara, H. Negishi, S. Hara, Hydrog. Energy 39, 4676(2014)10.1016/j.ijhydene.2013.10.015
[3]	I. Moro, L. Briottet, P. Lemoine, E. Andrieu, C. Blanc, Mater. Sci. Eng. A 527, 7252(2010)10.1016/j.msea.2010.07.027
[4]	C.Y. Yan, C.Y. Liu, B. Yan, Comput. Mater. Sci. 83, 158(2014)10.1016/j.commatsci.2013.11.007
[5]	T. Zhang, Y. Yao, W.Y. Chu, L.J. Qiao, Acta Metall. Sin. 38, 844(2002). (in Chinese)
[6]	M. Mukherjee, T.K. Pal, Acta Metall. Sin. (Engl. Lett.) 26, 206(2013)10.1007/s40195-012-0200-7
[7]	F.L. Sun, X.G. Li, F. Zhang, X.Q. Cheng, C. Zhou, N.C. Wu, Y.Q. Yin, J.B. Zhao, Acta Metall. Sin. (Engl. Lett.) 26, 257(2013)10.1007/s40195-012-0231-0
[8]	C.L. Qiu, L.Y. Lan, D.W. Zhao, X.H. Gao, L.X. Du, Acta Metall. Sin. (Engl. Lett.) 26, 49(2013)10.1007/s40195-012-0103-7
[9]	Z.T. Liu, C.W. Du, X. Zhang, F.M. Wang, X.G. Li, Acta Metall. Sin. (Engl. Lett.) 26, 489(2013)10.1007/s40195-012-0216-z
[10]	Y.X. Wu, D. Tang, H.T. Jiang, Z.L. Mi, H.T. Jing, Acta Metall. Sin. (Engl. Lett.) 26, 713(2013)10.1007/s40195-013-0232-7
[11]	H.Y. Song, S.H. Zhang, L.Y. Lan, C.M. Li, H.T. Liu, D.W. Zhao, G.D. Wang, Acta Metall. Sin. (Engl. Lett.) 26, 390(2013)10.1007/s40195-012-0183-4
[12]	M.A.V. Devanathan, Z. Stachushi, Proc. R. Soc. 270, 90(1962)10.1098/rspa.1962.0205
[13]	H.B. Xue, Y.F. Cheng, Corros. Sci. 53, 1201(2011)10.1016/j.corsci.2010.12.011
[14]	Y.X. Chen, Q.G. Chang, Acta Metall. Sin. 47, 548(2011). (in Chinese)
[15]	D. Oaoh, G. Owolabi, A. Odeshi, H. Whitworth, Acta Metall. Sin. (Engl. Lett.) 26, 378(2013)10.1007/s40195-013-0103-2
[16]	R.A. Oriani, Acta Metall. 18, 147(1970)10.1016/0001-6160(70)90078-7
[17]	Y.D. Han, Mater. Chem. Phys. 132, 216(2012)10.1016/j.matchemphys.2011.11.036
[18]	S. Liu, H. Zheng, Q.H. Gui, A.H. Ma, H.B. Yu, L.B. Wang, H.G. Yang, Acta Metall. Sin. 40, 393(2004). (in Chinese)
[19]	K. Masui, H. Yoshida, R. Watanabe, Trans. ISIJ 19, 547(1979)
[20]	T. Tanabe, Y. Yamanishi, S. Imoto, Mater. Trans. JIM 25, 1(1984)
[21]	J. Xu, X.K. Sun, W.X. Chen, Y.Y. Li, Acta Metall. Sin. 28, 399(1992). (in Chinese)