拉应力对2205双相不锈钢临界点蚀温度和点蚀行为的影响

doi:10.11896/cldb.201906020

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Abstract The effect of tensile stress on the critical pitting temperature (CPT) for 2205 duplex stainless steel (SS) was investigated using potentiostatic measurements. Potentiodynamic polarization, potentiostatic polarization, electrochemical impedance spectroscopy (EIS) were adopted to study the electrochemical corrosion behavior of 2205 duplex SS subjected to different tensile stresses at 40 ℃ and 60 ℃. The results confirmed the inverse correlation between CPT and tensile stress, with a singular point of 140 MPa, under which no pitting was observed even at 85 ℃. Potentiodynamic polarization, potentiostatic polarization and EIS indicated that below CPT the breakdown potential (E_b) and the stability of passive film declined with a tensile stress was exerted on the specimen. And moreover, the steel surface maintained in passive status during the potentiostatic polarization process. At a temperature above the CPT, stable pitting occured. With the increasing temperature, the decrease of E_b became more noticeable. The specimen which subjected to 140 MPa tensile stress underwent no pitting. This may be attributed to the crack-tip expansion and subsequent repassivation of the microcracks on surface of 2205 duplex SS under the effect of tensile stress and polarization. And in this circumstance, the electrochemical characteristic cannot denote its pitting corrosion resistance.

Key words： duplex stainless steel tensile stress critical pitting temperature breakdown potential microcrack pitting behavior

Published: 03 April 2019

CLC number:

TG172

Fund:This work was financially supported by the National Natural Science Foundation of China (51571051) and Collaborative Innovation Center of Major Machine Manufacturing in Liaoning.

About author:: Yan Hou received successive postgraduate and doctoral programs of study in Dalian University of Technology since September in 2016, focusing on the research of the corrosion behavior of stainless steel.Congqian Cheng received his Ph.D. degree in mate-rials from Dalian University of Technology in 2010.

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	HOU Yan
	CHENG Congqian
	ZHAO Jie
	FENG Xue
	LI Ran
	MIN Xiaohua

Cite this article:

HOU Yan,CHENG Congqian,ZHAO Jie, et al. Effect of Tensile Stress on Critical Pitting Temperature and Pitting Corrosion Behavior of 2205 Duplex Stainless Steel[J]. Materials Reports, 2019, 33(6): 1022-1026.

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http://www.mater-rep.com/EN/10.11896/cldb.201906020 OR http://www.mater-rep.com/EN/Y2019/V33/I6/1022

1 Hwang Heejoon, Park Yongsoo. Materials Transactions,2009,50(6),1548.
2 Shi L, Zheng Z J, Gao Y. Materials Review A:Review Papers,2015,29(12),79(in Chinese).
石林, 郑志军, 高岩. 材料导报:综述篇,2015,29(12),79.
3 Deng B, Jiang Y, Gong J, et al. Electrochimica Acta,2008,53(16),5220.
4 Laycock N J, Moayed M H, Newman R C. Journal of the Electrochemical Society,1998,145(8),2622.
5 Ebrahimi N, Momeni M, Moayed M H, et al. Corrosion Science,2011,53(2),637.
6 Deng B, Wang Z, Jiang Y, et al. Electrochimica Acta,2009,54(10),2790.
7 Moayed M H, Laycock N J, Newman R C. Corrosion Science,2003,45(6),1203.
8 Vignal V, Ba D, Zhang H, et al. Corrosion Science,2013,68(3),275.
9 Ovarfort R. Corrosion Science,1989,29(8),987.
10 Zakeri M, Nakhaie D, Naghizadeh M, et al. Corrosion Science,2015,93,234.
11 Zhang L, Jiang Y, Deng B, et al. Journal of Applied Electrochemistry,2009,39(10),1703.
12 Vignal V, Mary N, Valot C, et al. Electrochemical and Solid-State Letters,2004,7(4),39.
13 Wang H, Han E H. Electrochimica Acta,2013,90(5),128.
14 Yang J, Wang Q, Guan K. International Journal of Pressure Vessels & Piping,2013,110(10),72.
15 Mudali U K, Shankar P, Ningshen S, et al. Corrosion Science,2002,44(10),2183.
16 Zhang Z X, Lin G, Xu Z. Journal of Materials Processing Technology,2008,205(1-3),419.
17 Andersen H, Olsson C O A, Wegrelius L. Materials Science Forum, 1998,289-292, 925.
18 Deng B, Jiang Y, Gong J, et al. Electrochimica Acta,2008,53(16),5220.
19 Salinas-Bravo V M, Newman R C. Corrosion Science,1994,36(1),67.
20 Anita T, Pujar M G, Shaikh H, et al. Corrosion Science,2006,48(9),2689.
21 Zhang Y, Poursaee A. Anti-Corrosion Methods and Materials,2015,62(6),363.
22 Navaï F, Debbouz O. Journal of Materials Science,1999,34(5),1073.
23 Navaï F. Journal of Materials Science,1995,30(5),1166.
24 Li W T, Pang R S, Zhao W H, et al. The Chinese Journal of Nonferrous Metals,2015,25(12),3282(in Chinese).
李文婷, 潘若生, 赵苇杭,等.中国有色金属学报,2015,25(12),3282.