ELECTROCHEMISTRY STUDY ON THE RELATIONSHIP BETWEEN GRAIN BOUNDARY STATE AND CORROSION BEHAVIOR OF ULTRAFINE GRAINED IRON CHROMIUM ALLOY
DOI:
https://doi.org/10.17146/jsmi.2019.21.1.5640Keywords:
pitting corrosion, stainless steel, ECAP, ultrafine grainAbstract
ELECTROCHEMISTRY STUDY ON THE RELATIONSHIP BETWEEN GRAIN BOUNDARY STATE AND CORROSION BEHAVIOR OF ULTRAFINE GRAINED IRON CHROMIUM ALLOY. Research on stainless steel corrosion resistance continues to grow today. This reality cannot be separated from the needs of stainless steels in various fields, one of which is bio-implant. In this research, the effect of grain size on the corrosion behavior of iron-chromium (Fe-Cr) alloy was investigated. Coarse grain Fe-Cr alloy was first processed with equal channel angular pressing (ECAP) for eight cycles to obtain ultrafine grain structure. The coarse and ultrafine grain samples then were then tested using XRD, SEM-EBSD, and the pitting corrosion properties tested using potentiodynamic polarization method in NaCl 1 M solution. The result of XRD dan SEM-EBSD shows that the initial sample is truly has a coarse grain structure, while ECAP produces an ultrafine grain structure. Corrosion test results showed that the ultrafine grain sample had better pitting corrosion resistance compared to the coarse grain sample. This behavior is related to the rate of passivation that depends on non-equilibrium grain boundaries, which can be easily observed in the ultrafine grain structure. Based on these results, it can be concluded that the ultrafine grain Fe-Cr alloy has a better corrosion resistance compared to the coarse grain.
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References
I. Gotman, “Characteristics of Metals Used in Implants,” J. Endourol., vol. 11, no. 6, pp. 383–389, 2009.
L. D. Zardiackas, “Stainless Steels for Implants,” Wiley Encycl. Biomed. Eng., 2006.
N. Godbole, S. Yadav, M. Ramachandran, and S. Belemkar, “A review on surface treatment of stainless steel orthopedic implants,” Int. J. Pharm. Sci. Rev. Res., vol. 36, no. 1, pp. 190–194, 2016.
Y. Yu, S. Shironita, K. Souma, and M. Umeda, “Effect of chromium content on the corrosion resistance of ferritic stainless steels in sulfuric acid solution,” Heliyon, vol. 4, no. 11, p. e00958, 2018.
N. J. Den Uijl and L. J. Carless, “Advanced metal-forming technologies for automotive applications,” Adv. Mater. Automot. Eng., pp. 28–56, 2012.
R. K. Gupta and N. Birbilis, “The influence of nanocrystalline structure and processing route on corrosion of stainless steel: A review,” Corros. Sci., vol. 92, pp. 1–15, 2015.
X. Li, Y. Ni, Y. Jiang, J. Li, and L. Li, “Intergranular Corrosion of Low Cr Ferritic Stainless Steel 429 Evaluated by the Optimized Double Loop Electrochemical Potentiokinetic Reactivation Test,” Adv. Mater. Sci. Eng., vol. 2015, pp. 1–10, 2015.
M. Rifai, H. Miyamoto, and H. Fujiwara, “Effects of Strain Energy and Grain Size on Corrosion Resistance of Ultrafine Grained Fe-20%Cr Steels with Extremely low C and N Fabricated by ECAP,” Int. J. Corros., vol. 2015, no. 1, pp. 1–9, 2015.
M. Ilieva and R. Radev, “Effect of severe plastic deformation by ECAP on corrosion behaviour of aluminium alloy AA 7075,” Arch. Mater. Sci. Eng., vol. 81, no. 2, pp. 55–61, 2016.
G. Song, “Corrosion behavior of magnesium alloys and protection techniques,” vol. 2. Woodhead Publishing Limited, 2010.
K. Gopala Krishna, K. Sivaprasad, T. S. N. Sankara Narayanan, and K. C. Hari Kumar, “Localized corrosion of an ultrafine grained Al-4Zn-2Mg alloy produced by cryorolling,” Corros. Sci., vol. 60, pp. 82–89, 2012.
K. D. Ralston, N. Birbilis, and C. H. J. Davies, “Revealing the relationship between grain size and corrosion rate of metals,” Scr. Mater., vol. 63, no. 12, pp. 1201–1204, 2010.
Z. J. Zheng, Y. Gao, Y. Gui, and M. Zhu, “Optimization of Strength and Ductility in Ultra-Fine 304 Stainless Steel after Equal-Channel Angular Processing,” Mater. Sci. Forum, vol. 667–669, pp. 937–942, 2010.
M. Rifai, M. Yuasa, and H. Miyamoto, “Enhanced Corrosion Resistance of Ultrafine-Grained Fe-Cr Alloys with Subcritical Cr Contents for Passivity,” Metals (Basel)., vol. 8, no. 3, p. 149, 2018.
O. Saray, G. Purcek, I. Karaman, and H. J. Maier, “Improvement of formability of ultrafine-grained materials by post-SPD annealing,” Mater. Sci. Eng. A, vol. 619, pp. 119–128, 2014.
J. Niehuesbernd, E. Bruder, and C. Müller, “Impact of the heating rate on the annealing behavior and resulting mechanical properties of UFG HSLA steel,” Mater. Sci. Eng. A, vol. 711, pp. 325–333, 2018.
P. Fauvet, “Corrosion issues in nuclear fuel reprocessing plants,” Nucl. Corros. Sci. Eng., pp. 679–728, 2012.
X. Sauvage, G. Wilde, S. V. Divinski, Z. Horita, and R. Z. Valiev, “Grain boundaries in ultrafine grained materials processed by severe plastic deformation and related phenomena,” Mater. Sci. Eng. A, vol. 540, pp. 1–12, 2012.
H. Miyamoto, “Corrosion of Ultrafine Grained Materials by Severe Plastic Deformation, an Overview,” Mater. Trans., vol. 57, no. 5, pp. 559–572, 2016.
E. McCafferty, Introduction to Corrosion Science, 1st ed. New York, NY: Springer New York, 2010.
N. Mahato, M. H. Cho, and M. M. Singh, “Electrochemical, surface analytical, and spectroscopic study of passive film and pits formation on food grade ferritic stainless steel AISI430 in aqueous acetic acid containing chloride ions,” Mater. Corros., vol. 69, no. 12, pp. 1770–1783, 2018.
D. Landolt, Corrosion and surface chemistry of metals, Lausanne: EPFL Press, 2007, pp. 1-165.
P. Marcus, É. Protopopoff, and V. Maurice, “Surface Chemistry and Passivation of Metals and Alloys,” Mech. - Microstruct. - Corros. Coupling, no. Cc, pp. 91–120, 2019.
C. O. A. Olsson and D. Landolt, “Passive films on stainless steels - Chemistry, structure and growth,” Electrochim. Acta, vol. 48, no. 9 SPEC., pp. 1093–1104, 2003.
A. Abbasi Aghuy, M. Zakeri, M. H. Moayed, and M. Mazinani, “Effect of grain size on pitting corrosion of 304L austenitic stainless steel,” Corros. Sci., vol. 94, pp. 368–376, 2015.
I. B. Obot, “Recent Advances in Computational Design of Organic Materials for Corrosion Protection of Steel in Aqueous Media,” Dev. Corros. Prot., no. 2010, 2014.
J. Kang, J. Li, K. Y. Zhao, X. Bai, Q. L. Yong, and J. Su, “Passivation Behaviors of Super Martensitic Stainless Steel in Weak Acidic and Weak Alkaline NaCl Solutions,” J. Iron Steel Res. Int., vol. 22, no. 12, pp. 1156–1163, 2015.
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