Quantifying the dependency of uniform corrosion of structural steel on grain size

Document Type : Research Paper

Authors

School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran.

Abstract

The dependency of uniform corrosion of structural steel on the average grain size (D) should be quantified for design purposes. In the present work, a spectrum of grain sizes was obtained by simple heat treatment routes in st37 structural steel. It was revealed that the corrosion current density (icorr) increased by grain refinement, which was related to the increased density of grain boundaries. The data on the plots of hardness and icorr versus 1/√D were successfully fitted by a straight line and an exponential function, respectively. Therefore, the mechanical response was rationalized by a Hall-Petch type relationship with a slope of 237.8 MPa/µm0.5. Moreover, the obtained simple relationship between icorr and 1/√D can be used for prediction of the dependency of uniform corrosion on the average grain size.

Keywords

References

1. Ralston KD, Birbilis N, Davies CHJ. Revealing the relationship between grain size and corrosion rate of metals. Scripta Materialia. 2010;63(12):1201-4.
2. Ralston KD, Birbilis N. Effect of Grain Size on Corrosion: A Review. CORROSION. 2010;66(7):075005--13.
3. Armstrong RW. 60 Years of Hall-Petch: Past to Present Nano-Scale Connections. MATERIALS TRANSACTIONS. 2014;55(1):2-12.
4. Hall EO. The Deformation and Ageing of Mild Steel: III Discussion of Results. Proceedings of the Physical Society Section B. 1951;64(9):747-53.
5. Liu MY, Shi B, Wang C, Ji SK, Cai X, Song HW. Normal Hall–Petch behavior of mild steel with submicron grains. Materials Letters. 2003;57(19):2798-802.
6. Paupler P. G. E. Dieter. Mechanical Metallurgy. 3rd ed., Mc Graw-Hill Book Co., New York 1986. XXIII + 751 p., DM 138.50, ISBN 0–07–016893–8. Crystal Research and Technology. 1988;23(2):194-.
7. Chen YT, Zhang KG. Influence of Grain Size on Corrosion Resistance of a HSLA Steel. Advanced Materials Research. 2012;557-559:143-6.
8. Soleimani M, Mirzadeh H, Dehghanian C. Phase transformation mechanism and kinetics during step quenching of st37 low carbon steel. Materials Research Express. 2019;6(11):1165f2.
9. Cabrera JM, Ponce J, Prado JM. Modeling thermomechanical processing of austenite. Journal of Materials Processing Technology. 2003;143-144:403-9.
10. Kumar S, Aashranth B, Samantaray D, Davinci MA, Borah U, Bhaduri AK. Influence of nitrogen on kinetics of dynamic recrystallization in Fe-Cr-Ni-Mo steel. Vacuum. 2018;156:20-9.
11. Lin YC, Chen M-S, Zhong J. Microstructural evolution in 42CrMo steel during compression at elevated temperatures. Materials Letters. 2008;62(14):2132-5.
12. Mandal S, Ummadi R, Bose M, Balla VK, Roy M. Fe–Mn–Cu alloy as biodegradable material with enhanced antimicrobial properties. Materials Letters. 2019;237:323-7.
13. Fontana MG. Corrosion Engineering, 3rd edition: McGraw-Hill; 1987.
14. Nag P, Tripathi K, Pawar C. Basic Mechanical Engineering. McGraw-Hill, New York; 2009.
15. Hosford WF. Mechanical behavior of materials: Cambridge university press; 2010.
Journal of Ultrafine Grained and Nanostructured Materials
Volume 52, Issue 2
December 2019
Pages 206-209

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History

  • Receive Date: 19 November 2019
  • Revise Date: 07 December 2019
  • Accept Date: 09 December 2019

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