Browse > Article
http://dx.doi.org/10.5916/jkosme.2014.38.9.1087

Effects of stabilizing elements on mechanical and electrochemical characteristics of stainless steel in marine environment  

Lee, Jung-Hyung (Division of Marine Engineering, Mokpo Maritime University)
Choi, Yong-Won (Division of Marine Engineering, Mokpo Maritime University)
Jang, Seok-Ki (Division of Marine Engineering, Mokpo Maritime University)
Kim, Seong-Jong (Division of Marine Engineering, Mokpo Maritime University)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.38, no.9, 2014 , pp. 1087-1093 More about this Journal
Abstract
Stainless steels stabilized with Ti or Nb are largely used in offshore and shipbuilding industries due to its excellent corrosion resistance. In this study, carbide stabilizers, Ti and Nb, were added to stainless steel 304 specimens with different concentrations(Ti: 0.26%, 0.71%, Nb: 0.29%, 0.46%, 0.71%), and their mechanical and electrochemical characteristics were evaluated. Micro-Vickers hardness testing was employed to characterize the mechanical characteristics with alloying elements. Electrochemical evaluation techniques including Tafel analysis, cyclic polarization experiment, galvanostatic experiment were utilized to compare the corrosion characteristics of the specimens. The result of hardness tests revealed that Nb containing specimens showed increasing hardness with increasing alloying contents while adding Ti had little effect on increase in hardness. In the case of electrochemical measurements, the electrochemical characteristics of the specimens were enhanced with increasing Nb contents while they were deteriorated with increasing Ti contents. As a result, different stabilizers and their contents may produce significant differences in electrochemical characteristics, and there such effect must be taken account of in development of stainless steels for marine environment.
Keywords
Stainless steel; Seawater environment; Electrochemical characteristics; Cyclic polarization experiment; Stabilizing element;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 E. E. Stansbury and R. A. Buchanan, Fundamentals of electrochemical corrosion, American Society for Metals international, 2000.
2 J. O. Moon and C. H. Lee, "Precipitation and precipitate coarsening behavior according to Nb addition in the weld HAZ of a Ti-containing steel," Journal of the Korean Welding & Joining Society, vol. 26, no. 1, pp. 76-82, 2008 (in Korean).   DOI   ScienceOn
3 S. A. John, Corrosion of stainless steels: Wiley, 1996.
4 R. Knutsen and A. Ball, "The influence of inclusions on the corrosion behavior of a 12 wt% chromium steel," Corrosion, vol. 47, no. 5, pp. 359-368, 1991.   DOI
5 N. Dowling, C. Duret-Thual, G. Auclair, J. Audouard, and P. Combrade, "Effect of complex inclusions on pit initiation in 18% chromium-8% nickel stainless steel types 303, 304, and 321," Corrosion, vol. 51, no. 5, pp. 343-355, 1995.   DOI   ScienceOn
6 K. J. Blom and J. Degerbeck, "Low manganese austenitic stainless steel has improved resistance to pitting and crevice corrosion," Materials Performance, vol. 22, pp. 52-54, 1983.
7 J. Degerbeck, "Influence of Mn compared to that of Cr, Mo and S on resistance to initiation of pitting and crevice corrosion in austenitic stainless steels," Materials and Corrosion, vol. 29, pp. 179-188, 1978.   DOI   ScienceOn
8 L. Peguet, B. Malki, and B. Baroux, "Influence of cold working on the pitting corrosion resistance of stainless steels," Corrosion Science, vol. 49, no. 4, pp. 1933-1948, 2007.   DOI   ScienceOn
9 H. Krawiec, V. Vignal, O. Heintz, R. Oltra, E. Finot, and J. Olive, "Local electrochemical studies after heat treatment of stainless steel: role of induced metallurgical and surface modifications on pitting triggering," Metallurgical and Materials Transactions A, vol. 35, no. 11, pp. 3515-3521, 2004.   DOI
10 D. E. Williams, M. R. Kilburn, J. Cliff, and G. I. Waterhouse, "Composition changes around sulphide inclusions in stainless steels, and implications for the initiation of pitting corrosion," Corrosion Science, vol. 52, no. 11, pp. 3702-3716, 2010.   DOI   ScienceOn
11 ASTM, "Standard test method for conducting cyclic potentiodynamic polarization measurements for localized corrosion susceptibility of Iron-, Nickel-, or Cobalt-based alloys," ASTM G61-86, 2009.
12 E. McCafferty, "Validation of corrosion rates measured by the tafel extrapolation method," Corrosion Science, vol. 47, no. 12, pp. 3202-3215, 2005.   DOI   ScienceOn
13 K. Guan, X. Xu, H. Xu, and Z. Wang, "Effect of aging at $700^{\circ}C$ on precipitation and toughness of AISI 321 and AISI 347 austenitic stainless steel welds," Nuclear Engineering and Design, vol. 235, no. 23, pp. 2485-2494, 2005.   DOI   ScienceOn
14 Y. Iwabuchi, "Effect of nitrogen and delta-ferrite contents on mechanical properties, corrosion resistance and abrasive wear in type SCS 13 stainless cast steel," Materials Transactions, vol. 33, no. 6, pp. 627-631, 1992.   DOI
15 D. Y., Kim, Mechanical Properties and Intergranular Corrosion Behaviors of Welded AISI 304 Stainless Steels Containing Nb, M.S., Graduate School of Industry, Chonnam National University, Korea, 2000 (in Korean).
16 H. Bohni, T. Suter, and A. Schreyer, "Micro-and nanotechniques to study localized corrosion," Electrochimica Acta, vol. 40, no. 10, pp. 1361-1368, 1995.   DOI   ScienceOn
17 S. Frangini and N. De Cristofaro, "Analysis of the galvanostatic polarization method for determining reliable pitting potentials on stainless steels in crevice-free conditions," Corrosion Science, vol. 45, no. 12, pp. 2769-2786, 2003.   DOI   ScienceOn
18 G. Frankel, L. Stockert, F. Hunkeler, and H. Boehni, "Metastable pitting of stainless steel," Corrosion, vol. 43, no. 7, pp. 429-436, 1987.   DOI   ScienceOn
19 J. Jayaraj, D. Sordelet, D. Kim, Y. Kim, and E. Fleury, "Corrosion behaviour of Ni-Zr-Ti-Si-Sn amorphous plasma spray coating," Corrosion Science, vol. 48, no. 4, pp. 950-964, 2006.   DOI   ScienceOn
20 S. Park, J. Kim, and J. Yoon, "Effect of W, Mo, and Ti on the corrosion behavior of low-alloy steel in sulfuric acid," Corrosion, vol. 70, no. 2, pp. 196-205, 2013.
21 Korean Register, Rules for the Classification of Steel Ships, Part 2 Materials and Welding, 2014 (in Korean).
22 D. N. Veritas, Rules for Classification of Ships/High Speed, Light Craft and Naval Surface Craft, Part 2 Metallic Materials, 2011.
23 American Bureau of Shipping, Rules for Materials and Welding, Part 2, 2012.
24 M. Suleiman and R. Newman, "Galvanostatic, creviced stress corrosion test for austenitic stainless steels in hot chloride solutions," Corrosion, vol. 51, no. 3, pp. 171-176, 1995.   DOI   ScienceOn