Investigation of the Intergranular Corrosion Behavior of UNS S42000 Martensitic Stainless Steels Using Potentiodynamic Electrochemical Impedance Spectroscopy

Subject Areas :

Khashayar Morshed-Behbahani ¹ , Pooria Najafisayar ² , Mahmoud Pakshir ³ , Nika Zakerin ⁴

1 - M.Sc., Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran.
2 - Assistant Prof., Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran.
3 - Assistant Prof., Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran.
4 - Prof., Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran.

Received: 2020-09-06 Accepted : 2020-11-02 Published : 2021-10-23

Keywords: Tempering, Intergranular Corrosion, EIS, Martensitic Stainless Steel,

Abstract :

In this research, UNS S42000 martensitic stainless steel (SS) samples were subjected to tempering heat treatment at constant temperature of 550 oC for different time duration, ranging between 0.5 and 24 h, so as to assess the intergranular corrosion (IGC) behavior of the alloy. The microstructural characteristics and electrochemical properties of the alloys were evaluated using scanning electron microscopy (SEM) and anodic polarization method, respectively. The localized attack of the samples was investigated by potentiodynamic electrochemical impedance spectroscopy (PD-EIS) in the transpassive potential region. The results indicated that tempering up to 2 h would be followed by severe intergranular attack at martensite lath interfaces; however, the effect of tempering on corrosion performance of the alloys would be suppressed at prolonged tempering due to desensitization. Moreover, the PD-EIS results revealed that the charge transfer resistance (Rct) values of specimens at 1.10 V can be employed as a primary criterion in order to assess the localized attack of the martensitic SS. In this regard, the lower the Rct value at this DC bias potential, the lower the corrosion resistance to the IGC. These results were in good agreement with the SEM morphologies from the surfaces of corroded samples, indicating uniform corrosion, severe attack and desensitization for samples experiencing no-tempering, short tempering time and prolonged tempering, respectively.

References:

[1] A. Candelaria & C. Pinedo, "Influence of the heat treatment on the corrosion resistance of the martensitic stainless steel type AISI 420," Journal of materials Science letters, vol. 22, no 16, pp. 1151-1153, 2003.

 

[2] R. R. B. Baboian, "Corrosion tests and standards: application and interpretation", ASTM International, 2005.

 

[3] B. Deng, Y. Jiang, J. Xu, T. Sun, J. Gao, L. Zhang, W. Zhang & J. Li, "Application of the modified electrochemical potentiodynamic reactivation method to detect susceptibility to intergranular corrosion of a newly developed lean duplex stainless steel LDX2101," Corrosion Science, vol. 52, no 3, pp. 969-977, 2010.

 

[4] ASTM G108-15, Standard test method for electrochemical reactivation (EPR) for detecting sensitization of AISI type, 2015.

 

[5] P. De Tiedra, Ó. Martín & M. San-Juan, "Effect of metallurgical evolution during post-weld aging treatment on localised corrosion of resistance spot welding joints of A286 superalloy," Corrosion Engineering, Science and Technology, vol. 53, no 5, pp. 355-361, 2018.

 

[6] P. R. Kannan, V. Muthupandi, K. Devakumaran, C. Sridivya & E. Arthi, "Effect of grain size on self -healing behaviour of sensitized S304HCu stainless steel," Materials Chemistry and Physics, vol. 207, no, pp. 203-211, 2018.

 

[7] N. Lopez, M. Cid, M. Puiggali, I. Azkarate & A. Pelayo, "Application of double loop electrochemical potentiodynamic reactivation test to austenitic and duplex stainless steels," Materials Science and Engineering: A, vol. 229, no 1-2, pp. 123-128, 1997.

 

[8] M. A. Melia, H.-D. A. Nguyen, J. M. Rodelas & E. J. Schindelholz, "Corrosion properties of 304L stainless steel made by directed energy deposition additive manufacturing," Corrosion Science, vol. 152, pp. 20-30, 2019.

 

[9] D. Kang, N. Kim & H. Lee, "Effect of Aging on the Corrosion Resistance of 2209 Duplex Stainless Steel Weldments," Metals and Materials International, vol. 25, no. 3, pp. 740-750, 2019.

 

[10] G. A. Ragoisha & A.S. Bondarenko, "Potentiodynamic electrochemical impedance spectroscopy," Electrochimica Acta, vol. 50, no. 7-8, pp. 1553-1563, 2005.

 

[11] G. A. Ragoisha, "Potentiodynamic electrochemical impedance spectroscopy for underpotential deposition processes," Electroanalysis, vol. 27, no. 4, pp. 855-863, 2015.

 

[12] J. Házì, D. M. Elton, W. A. Czerwinski, J. Schiewe, V. A. Vicente-Beckett & A. M. Bond, "Microcomputer-based instrumentation for multi-frequency Fourier transform alternating current (admittance and impedance) voltammetry," Journal of Electroanalytical Chemistry, vol. 437, no. 1-2, pp. 1-15, 1997.

 

[13] A. Srinivasan, K. S. Shin & N. Rajendran, "Applications of dynamic electrochemical impedance spectroscopy (DEIS) to evaluate protective coatings formed on AZ31 magnesium alloy," RSC Advances, vol. 5, no. 37, pp. 29589-29593, 2015.

 

[14] A. Srinivasan, K. S. Shin & N. Rajendran, "Dynamic electrochemical impedance spectroscopy (DEIS) studies of AZ31 magnesium alloy in simulated body fluid solution," RSC Advances, vol. 4, no. 53, pp. 27791-27795, 2014.

 

[15] H. Gerengi, G. Bereket & M. Kurtay, "A morphological and electrochemical comparison of the corrosion process of aluminum alloys under simulated acid rain conditions," Journal of the Taiwan Institute of Chemical Engineers, vol. 58, no. pp. 509-516, 2016.

 

[16] H. Gerengi, P. Slepski & G. Bereket, "Dynamic electrochemical impedance spectroscopy and polarization studies to evaluate the inhibition effect of benzotriazole on copper‐manganese‐aluminium alloy in artificial seawater," Materials and Corrosion, vol. 64, no. 11, pp. 1024-1031, 2013.

 

[17] J. Huang, Z. Li & J. Zhang, "Dynamic electrochemical impedance spectroscopy reconstructed from continuous impedance measurement of single frequency during charging/discharging," Journal of Power Sources, vol. 273, no. pp. 1098-1102, 2015.

 

[18] A. S. Bandarenka, "Exploring the interfaces between metal electrodes and aqueous electrolytes with electrochemical impedance spectroscopy," Analyst, vol. 138, no. 19, pp. 5540-5554, 2013.

 

[19] K. Darowicki, J. Orlikowski & A. Arutunow, "Dynamic electrochemical impedance spectroscopy measurements of passive layer cracking under static tensile stresses," Journal of Solid State Electrochemistry, vol. 8, no. 6, pp. 352-359, 2004.

 

[20] S. Nagarajan, M. Karthega 7 N. Rajendran, "Pitting corrosion studies of super austenitic stainless steels in natural sea water using dynamic electrochemical impedance spectroscopy," Journal of applied electrochemistry, vol. 37, no. 2, pp. 195-201, 2007.

 

[21] C. A. Huang, Y. Z. Chang & S. Chen, "The electrochemical behavior of austenitic stainless steel with different degrees of sensitization in the transpassive potential region in 1 M H₂SO₄ containing chloride," Corrosion science, vol. 46, no. 6, pp. 1501-1513, 2004.

 

[22] K. Morshed-Behbahani & M. Pakshir, "Effect of Different Degrees of Sensitization on the EIS Response of 316L and 316 SS in Transpassive Region," Journal of Materials Engineering & Performance, vol. 23, no. 6, pp. 2283-2292, 2014

.

[23] K. Morshed-Behbahani & M. Pakshir, "The effect of solution-annealing on the EIS response of AISI 316 SS with different degrees of sensitization in the transpassive region," Protection of Metals and Physical Chemistry of Surfaces, vol. 51, no. 6, pp. 1027-1033, 2015.

 

[24] K. Morshed-Behbahani, M. Pakshir, Z. Abbasi & P. Najafisayar, "Damage mechanism at different transpassive potentials of solution-annealed 316 and 316L stainless steels," International Journal of Minerals, Metallurgy, and Materials, vol. 1, no. 22, pp. 45-51, 2015.

 

]25[ خ. مرشدبهبهانی، پ. نجفی سیار و م. پاکشیر، "مطالعه تأثیر حساس شدن بر رفتار خوردگی فولاد زنگ‌نزن دوپلکس SAF 2205 در ناحیه ترانس‌پسیو"، فرآیندهای نوین در مهندسی مواد، شماره. 10، دوره. 4، صفحه. 33-42، 1395.

 

 [26] ASTM A763-14, Standard Practices for Detecting Susceptibility to Intergranular Attack in Ferritic Stainless Steels, 2014.

 

[27] K. Morshed-Behbahani, P. Najafisayar, M. Pakshir & M. Shahsavari, "An electrochemical study on the effect of stabilization and sensitization heat treatments on the intergranular corrosion behaviour of AISI 321H austenitic stainless steel," Corrosion Science, vol. 138, pp. 28-41, 2018.

[28] K. Morshed-Behbahani, P. Najafisayar & M. Pakshir, "Study of the Intergranular Corrosion of Sensitized UNS S31803 Stainless Steel in Transpassive Region," Journal of Materials Engineering and Performance, vol. 25, no. 8, pp. 3418-3429, 2016.

 

[29] D. Y. Peña Ballesteros, M. Camacho, Y. Enrique & L. V. Barreto Hernandez, "Evaluation of the synergistic effect of erosion-corrosion on AISI 4330 steel in saline-sand multiphase flow by electrochemical and gravimetric techniques," International Journal of Electrochemistry, 2016.