Abstract
This paper identified the effects of Ti and Nb on pitting and intergranular corrosion resistance in a ferritic stainless steel weld metal of the automobile exhaust system. We fabricated 4 flux cored wires designed with 0–0.2 wt% Ti and 0–1.0 wt% Nb and performed Flux Cored Arc Welding. Through the potentiodynamic polarization test in 0.5M NaCl, we evaluated pitting resistance. And in order to evaluate the intergranular corrosion resistance, we observed microstructure after we performed DL-EPR test in 0.5M H2SO4+0.01M KSCN. As a result of the test, the specimen added with 0.2%Ti+1.0%Nb showed the highest pitting resistance. From observing the degree of sensitization and microstructure, the intergranular corrosion resistance was higher as the contents of Ti and Nb increased. And through EBSD we observed Cr carbide which affects the corrosion resistance.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. Jang and C. J. Park, J. of Advanced Engineering and Technology 3, 333 (2010).
S. H. Lee, Y. T. Shin, and H. W. Lee, Korean J. Met. Mater. 50, 280 (2012).
M. Sim and K. S. Lee, Mater. Sci. Eng. A 396, 159 (2005).
Y. Song and Y. S. Ahn, J. of KSPSE 14, 59 (2010).
G. Hong and K. B. Kang, J. of KWJS 27, 79 (2009).
C. Lee and B. Y. Lee, J. of KWJS 27, 27 (2009).
T. J. Park, J. P. Kong, H. S. Na, C. Y. Kang, S. H. Uhm, J. K. Kim, I. S. Woo and J. S. Lee, J. of KWJS 28, 92 (2010).
K. H. Kim, K. H. Do, W. J. Choi, S. B. Lee, D. S. Kim, and J. J. Pak, Korean J. Met. Mater. 51, 113 (2013).
D. Y. Ryoo, S. H. Park, and M. N. Park, J. of KIMM 34, 207 (1996).
A. J. Sedriks, Corrosion of Stainless Steels, 2nd ed., pp. 45–46, pp.121–122, John Wiley & Sons, New York (1996).
S. Kou, Welding Metallurgy, 2nd ed., pp.447–448, John Wiley & Sons, New York (2003).
J. C. Lippold and D. J. Kotecki, Welding Metallurgy and Weldability of Stainless Steels, pp.126–130, John Wiley & Sons, New York (2005).
H. Yan, H. Bi, X. Li, and Z. Xu, Mater. Charact. 59, 1741 (2008).
U. S. Hwang and Y. D. Lee, J. of KWJS 2, 189 (2000).
L. X. Wang and Q. J. Zhai, Mater. Design 30, 49 (2009).
J. Sedriks, Corrosion of Stainless Steels, 2nd ed., pp.45–46, pp.239–242, John Wiley & Sons, New York (1996).
D. A. Jones, Principles and Prevention of Corrosion, 2nd ed., pp.32–34, Prentice Hall, United States (1995).
V. Randle and O. Engler, Introduction to Texture Analysis: Macrotexture, Microtexture and Orientation Mapping, pp. 125–203. CRC Press, New York (2000).
R. A. Schwarzer, D. P. Field, B. L. Adams, M. Kumar, and A. J. Schwartz, Electron Backscatter Diffraction in Materials Science, 2nd ed., (eds. A. J. Schwartz, M. Kumar, B. L. Adams, D. P. Field), pp.1–20, Springer, New York (2009).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kim, J., Lee, H. Study for corrosion characteristics of ferritic stainless steel weld metal with respect to added contents of Ti and Nb. Met. Mater. Int. 20, 329–335 (2014). https://doi.org/10.1007/s12540-014-1019-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12540-014-1019-8