Effects of Temperature on Fretting Corrosion Between Alloy 690TT and 405 Stainless Steel in Pure Water

doi:10.1007/s40195-019-00929-9

Abstract

Abstract:

In pressurized water reactor, fretting corrosion has become the main reason for the failure of 690TT heat exchanger tubes. The effect of temperature on the fretting corrosion behavior between 690TT tube and 405 stainless steel (SS) bar has been studied during 10⁶ fretting cycles. The overall average coefficient of friction (COF) values descends with an increase in test temperature, while the width of worn scar becomes wider. The severest fretting corrosion happens when the test temperature is at 100 °C. The wear mechanism differs at different test temperatures, from adhesive wear at room temperature to abrasive wear and delamination at 100 °C, to abrasive wear at 200 °C. Deformation slips, high residual strain concentration, and micro-cracks are found which are disadvantageous for the further service performance of the tubes.

Key words: Alloy 690TT, 405 SS, Fretting corrosion, Temperature

Xing-Chen Liu, Hong-Liang Ming, Zhi-Ming Zhang, Jian-Qiu Wang, Li-Chen Tang, Hao Qian, Yong-Cheng Xie, En-Hou Han. Effects of Temperature on Fretting Corrosion Between Alloy 690TT and 405 Stainless Steel in Pure Water[J]. Acta Metallurgica Sinica (English Letters), 2019, 32(12): 1437-1448.

Figures/Tables 13

Table 1 Chemical compositions for 690TT and 405 SS (wt%)

	Fe	Ni	Cr	Si	Mn	Al	Ti	C	S	P
690TT	9.81	Bal.	29.55	0.06	0.01	0.11	0.12	0.022	<?0.01	<?0.01
405SS	Bal.	0.55	13.51	0.76	0.85	0.13	-	0.060	0.018	0.025

Fig. 1 Schematic diagram of the high-temperature high-pressure fretting wear testing equipment

Table 2 Parameters for the fretting corrosion tests of 690 TT mated with 405 SS

Testing parameters	Value (unit)
Temperature	RT, 100 °C, 200 °C
Pressure	12.5 MPa
DO content	<?5 μg/L (by weight)
Solution	Pure water
Frequency	40 Hz
Displacement amplitude	±?100 μm
Normal force	40 N
Total cycles	10⁶
Immersion time before fretting	18 h

Fig. 2 Schematic diagram of the contact configuration between 690TT tube and 405SS cylinder

Table 3 Width of contacted area and initial contact stress of 690 TT tube mated with 405 SS

Temperature (°C)	b (μm)	P₀ (MPa)
RT	87.48	72.77
100	87.81	72.50
200	88.27	72.13

Fig. 3 Microstructure of 405 SS a and 690TT b observed by optical microscope and the micro-hardness c

Fig. 4 Friction coefficients as a function of fretting cycle numbers at different temperature in pure water

Fig. 5 Surface morphologies of the worn scars on 690TT tubes against 405 SS cylinder at different temperature in pure water, a-c by SEM, d-f 3D morphologies by 3-D surface morphology analyzer

Fig. 6 Surface morphologies of the worn scars on 690TT tube at higher magnifications by SEM, a-c for sample tested at RT, d-f for sample tested at 100 °C, g-i for sample tested at 200 °C

Fig. 7 EDS line scanning across the worn scars on 690TT tube tested at different temperature: a, d for sample tested at RT, b, e for sample tested at 100 °C, c, f for sample tested at 200 °C

Fig. 8 Microstructure of the cross sections of the worn scars on 690TT tested at different temperature and the corresponding EDS line scanning results: a, b for RT, c, d for 100 °C, e, f for 200 °C

Fig. 9 Cross-sectional profiles a, wear volumes and maximum wear depths b of the worn scars on 690TT tubes tested at different temperature in pure water

Fig. 10 EBSD observation results of the cross section of the worn scar on 690TT tube tested at RT in pure water: a IPF, b grain boundary type distribution and c KAM distribution

References

[1]	R.S. Dutta, R. Tewari, P.K. De, Corros. Sci. 49, 303(2007)
[2]	J. Benson, Overview of steam generator operating experience. Paper presented at the 4th international symposium on materials and reliability in nuclear power plants, Shenyang, China, 21 September 2015
[3]	P. Sherburne, Stress Corrosion cracking of alloy 600 &690 steam generator tubing. Paper presented at international seminar on welding and non-destructive examination in nuclear power plants, Suzhou, China, 27 June 2009
[4]	H.J. Connors, Nucl. Technol. 55, 311(2017)
[5]	M.H. Attia, Tribol. Int. 39, 1294(2006)
[6]	S.H. Jeong, C.W. Cho, Y.Z. Lee, Tribol. Int. 38, 283(2005)
[7]	J. Li, B.B. Yang, Y.H. Lu, L. Xin, Z.H. Wang, T. Shoji, Tribol. Int. 116, 147(2017)
[8]	J.K. Hong, I.S. Kim, C.Y. Park, E.S. Kim, Wear 259, 349 (2005)
[9]	X. Mi, Z.B. Cai, X.M. Xiong, H. Qian, L.C. Tang, Y.C. Xie, J.F. Peng, M.H. Zhu, Tribol. Int. 100, 400(2016)
[10]	Z.H. Wang, Y.H. Lu, J. Li, T. Shoji, Tribol. Int. 95, 162(2016)
[11]	J. Li, B. Yang, Y. Lu, L. Xin, Z. Wang, T. Shoji, Mater. Charact. 131, 224(2017)
[12]	J. Li, Y.H. Lu, Wear 304, 223 (2013)
[13]	L. Xin, B.B. Yang, Z.H. Wang, J. Li, Y. Lu, T. Shoji, Wear 368, 210 (2016)
[14]	X. Guo, P. Lai, L. Tang, J. Wang, L. Zhang, Tribol. Int. 116, 155(2017)
[15]	L. Xin, Y.H. Lu, Y. Otsuka, Y. Mutoh, Z.H. Wang, T. Shoji, Mater. Charact. 134, 260(2017)
[16]	J.Y. Yun, M.C. Park, G.S. Shin, J.H. Heo, D.I. Kim, S.J. Kim, Wear 313, 83 (2014)
[17]	L. Xin, Y. Lu, T. Shoji, Mater. Charact. 131, 157(2017)
[18]	H. Sun, X. Wu, E.H. Han, Corros. Sci. 51, 2840(2012)
[19]	I. Betova, M. Bojinov, V. Karastoyanov, P. Kinnunen, T. Saario, Corros. Sci. 58, 20(2012)
[20]	Z.M. Zhang, J.Q. Wang, E.H. Han, W. Ke, Corros. Sci. 53, 3623(2011)
[21]	J.B. Huang, X.H. Liu, E.H. Han, X.Q. Wu, Corros. Sci. 53, 3254(2011)
[22]	W.J. Kuang, X.Q. Wu, E.H. Han, Corros. Sci. 63, 259(2012)
[23]	J.Y. Yun, H.S. Lee, D.H. Hur, W.S. Kang, C.H. Bae, S.J. Kim, Wear 368, 344 (2016)
[24]	X. Guo, P. Lai, L. Tang, J. Lu, J. Wang, L. Zhang, Wear 400-401, 119(2018)
[25]	S.M. Hong, I.S. Kim, Wear 259, 356 (2005)
[26]	H.L. Ming, X.C. Liu, Z.M. Zhang, J.Q. Wang, E.H. Han, Tribol. Int. 126, 133(2018)
[27]	Z.R. Zhou, L. Vincent (eds.), Fretting Wear (Science Press, Beijing, 2002)
[28]	Q. Luo, Q.S. Wu, Q. Xu, J. Li, Phys. Exam. Test 32, 3 (2014)
[29]	J.Z. Wang, J.Q. Wang, H.L. Ming, Z.M. Zhang, E.H. Han, J. Mater. Sci. Technol. 34, 1419(2018)
[30]	P. Lai, X. Gao, L. Tang, X. Guo, L. Zhang, Nucl. Eng. Des. 327, 51(2018)
[31]	W.J. Kuang, X.Q. Wu, E.H. Han, J.C. Rao, Corros. Sci. 53, 3853(2011)
[32]	L. Xin, Z. Wang, J. Li, Y. Lu, T. Shoji, Mater. Charact. 115, 32(2016)
[33]	F. Huang, J.Q. Wang, E.H. Han, W. Ke, J. Mater. Sci. Technol. 28, 562(2012)
[34]	D. Chen, E.H. Han, X. Wu, Corros. Sci. 111, 518(2016)
[35]	L. Xin, B. Yang, J. Li, Y. Lu, T. Shoji, Corros. Sci. 123, 116(2017)
[36]	H.L. Ming, Z.M. Zhang, P.Y. Xiu, J.Q. Wang, E.H. Han, W. Ke, Acta Metall. Sin. (Engl. Lett.) 29, 848(2016)
[37]	X.Q. Wu, S. Xu, E.H. Han, W. Ke, Acta Metall. Sin. (Engl. Lett.) 47, 790(2011)