Materials Transactions Online

Materials Transactions, Vol.58 No.02 (2017) pp.225-230
© 2016 The Japan Institute of Metals and Materials

Assessment of the Electrolyte Composition in the Degree of Sensitization in AISI 347H Stainless Steel

V. L. Cruz-Hernández1, M. A. García-Rentería2, R. García-Hernández1 and V. H. López-Morelos1

1Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo. Francisco J. Mujica S/N, Ciudad Universitaria, Building “U”, CP 58030, Morelia, Mich. México
2Facultad de Metalurgia, Universidad Autónoma de Coahuila, Carretera 57 km. 5 CP 25720, Monclova, Coahuila, México

This study evaluated the suitability of the depassivator in revealing low degrees of sensitization (DOS) in samples of wrought AISI 347H austenitic stainless steel in the as-received condition and solution heat treated (SHT) at 1050℃. Assessment of the electrolyte composition was performed by the double loop electrochemical potentiokinetic reactivation (DL-EPR) test at room temperature. The electrolyte 1.0M H2SO4 + 0.50M HCl was found to be adequate for detecting low DOS. Microstructural characterization of the as-received material revealed the presence of Cr-rich carbides. These carbides were responsible of the susceptibility to IGC.


(Received 2016/07/28; Accepted 2016/11/15; Published 2017/01/25)

Keywords: sensitization, austenitic stainless steel, AISI 347H, depassivator, double loop electrochemical potentiokinetic reactivation test

PDF(Free)PDF (Free) Table of ContentsTable of Contents


  1. R.L. Plaut, C. Herrera, D.M. Escriba, P. Rangel-Rios and A.F. Padilha: Mater. Res. 10 (2007) 453-460.
  2. I. Hajiannia, M. Shamanian and M. Kasiri: Mater. Des. 50 (2013) 566-573.
  3. T. Fukunaga, K. Kaneko, R. Kawano, K. Ueda, K. Yamada, N. Nakada, M. Kikuchi, J.S. Barnard and P.A. Midgley: ISIJ Int. 54 (2014) 148-152.
  4. P. Lacombe, B. Baroux, G. Béranger, L. Colombier, J. Hochmann: Les Editions de Physique (1993).
  5. A.F. Padilha and P. Rios: ISIJ Int. 42 (2002) 325-337.
  6. H. Uno, A. Kimura and T. Misawa: Corrosion 48 (1992) 467-474.
  7. J. S. Silcock, A. W. Denham: institute of metals monograph, Institute of Metals 33 (1969).
  8. B. Sasmal: J. Mater. Sci. 32 (1997) 5439-5444.
  9. K.H. Lo, C.H. Shek and J.K.L. Lai: Mater. Sci. Eng. 65 (2009) 39-104.
  10. S. Rahimi, D. Engelberg and J. Marrow: Corros. Sci. 53 (2011) 4213-4222.
  11. L. Murr and Advani: Mater. Charact. 39 (1997) 575-598.
  12. A.P. Majidi and M.A. Streicher: Corrosion 40 (1984) 584-593.
  13. M. Momeni, M.H. Moayed and A. Davoodi: Corros. Sci. 52 (2010) 2653-2660.
  14. T.F. Wu and W.T. Tsai: Corros. Sci. 45 (2003) 267-280.
  15. M. Prohaska, H. Kanduth, G. Mori, R. Grill and G. Tischler: Corros. Sci. 52 (2010) 1582-1592.
  16. M. Terada, D. Escriba, I. Costa, E. Materna-Morris and A. Padilha: Mater. Charact. 59 (2008) 663-668.
  17. A.S. Lima, A.M. Nascimento, H.F.G. Abreu and P.d. Lima-Neto: J. Mater. Sci. 40 (2005) 139-144.
  18. S.M. Hong, M.Y. Kim, D.J. Min, K. Lee, J.H. Shim, D.I. Kim, J.Y. Suh, W.S. Jung and I.S. Choi: Mater. Charact. 94 (2014) 7-13.
  19. R. Ayer, C. F. Klein and C. N. Marzinsky: Metallurgical Transactions A 23 (1992) 2455-2467.
  20. Y. Kina, V.M. Souza, S.S.M. Tavares, J.A. Souza and H.F.G.d. Abreu: J. Mater. Process. Technol. 199 (2008) 391-395.


© 2016 The Japan Institute of Metals and Materials
Comments to us :