Corrosion Behavior of Fe-Ni Bainitic Steel Through an Inverted Austempering Multi-Step Process for Weathering Steel Applications
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A Fe-Ni Bainitic steel as a weathering steel application was developed by combining its excellent mechanical properties and corrosion resistance in maritime environments. Nickel concentration (0.4-3 wt%) and inverted austempering multi-step (IAM) process were primary determinants of the microstructure of the Fe-Ni Bainitic steel. The initial austempering steel was performed at 300 o C for 600 seconds to obtain a partly bainitic transformation. The steel was heated again for 1800 s at 450 o C. The microstructure was comprised of ferrite, a blocky martensite/austenite island, and a homogeneous lath-shape bainite structure with widths ranging from 4.67 to 6.89 µm. The maximum strength, 1480 MPa, was obtained with 3 wt% nickel. In this study, corrosion behavior was investigated utilizing potentiodynamic and electrochemical impedance spectroscopy (EIS) tests. A higher nickel content in Fe-Ni Bainitic steel refined the grain size, improved the bainite fraction, lowered the corrosion rate to 0.0257 mmpy, and increased the charge transfer of film resistance to 1369 Ω.
Abstract
A Fe-Ni Bainitic steel as a weathering steel application was developed by combining its excellent mechanical properties and corrosion resistance in maritime environments. Nickel concentration (0.4-3 wt%) and inverted austempering multi-step (IAM) process were primary determinants of the microstructure of the Fe-Ni Bainitic steel. The initial austempering steel was performed at 300 o C for 600 seconds to obtain a partly bainitic transformation. The steel was heated again for 1800 s at 450 o C. The microstructure was comprised of ferrite, a blocky martensite/austenite island, and a homogeneous lath-shape bainite structure with widths ranging from 4.67 to 6.89 µm. The maximum strength, 1480 MPa, was obtained with 3 wt% nickel. In this study, corrosion behavior was investigated utilizing potentiodynamic and electrochemical impedance spectroscopy (EIS) tests. A higher nickel content in Fe-Ni Bainitic steel refined the grain size, improved the bainite fraction, lowered the corrosion rate to 0.0257 mmpy, and increased the charge transfer of film resistance to 1369 Ω.
참고문헌 (24)
- P. Lambert, "Sustainability of Construction Materials", pp.105~128 (2016), Elsevier Ltd
- J. Jia, "Development and optimization of Ni-advanced weathering steel: A review", Corrosion Communication, 2, pp.82~ (2021)[DOI]
- W. Wu, "Benefit of the corrosion product film formed on a new weathering steel containing 3% nickel under marine atmosphere in Maldives", Corrosion Science, 165, pp.108416~ (2020)[DOI]
- X. Cheng, "Optimizing the nickel content in weathering steels to enhance their corrosion resistance in acidic atmospheres", Corrosion Science, 115, pp.135~ (2017)[DOI]
- M. Morcillo, "Atmospheric corrosion of weathering steels. Overview for engineers. Part I: Basic concepts", Construction and Building Materials, 213, pp.723~ (2019)[DOI]
- J. Cheng, "High-strength weathering steels obtained using bainite matrix and nanoscale co-precipitation", Materials Letters, 236, pp.307~ (2019)[DOI]
- T. Zhang, "On how the corrosion behavior and the functions of Cu, Ni and Mo of the weathering steel in environments with different NaCl concentrations", Corrosion Science, 192, pp.109851~ (2021)[DOI]
- Neetu, "Effect of various phase fraction of bainite, intercritical ferrite, retained austenite and pearlite on the corrosion behavior of multiphase steels", Corrosion Science, 178, pp.109043~ (2021)[DOI]
- X. M. Xiao, "Effects of Alloy Element and Microstructure on Corrosion Resistant Property of Deposited Metals of Weathering Steel", Journal of Iron and Steel Research International, 23, pp.171~ (2016)[DOI]
- Thick1, "ASTM International", 2001
- H. Mousalou, "Microstructural and mechanical properties of low-carbon ultra-fine bainitic steel produced by multi-step austempering process", Materials Science and Engineering : A, 734, pp.329~ (2018)[DOI]
- G. Gao, "Inverted multi-step bainitic austempering process routes:Enhanced strength and ductility", Materials Science and Engineering : A, 736, pp.298~ (2018)[DOI]
- Z. Yao, "Effect of Ni and Cr Addition on Transformation and Properties of Low-Carbon Bainitic Steels", Transcations of the Indian Institute of Metals, 72, pp.1167~ (2019)[DOI]
- B. Adamczyk-Cieślak, "The Impact of Retained Austenite on the Mechanical Properties of Bainitic and Dual Phase Steels", Journal of Materials Engineering and Performance, 31, pp.4419~ (2022)[DOI]
- H. Y. Dong, "A Effect of nickel on hardening behavior and mechanical properties of nanostructured bainite-austenite steels", Materials Sciences and Engineering : A, 817, pp.141410~ (2021)[DOI]
- J. Tian, "Effect of Ni Addition on Bainite Transformation and Properties in a 2000 MPa Grade Ultrahigh Strength Bainitic Steel", Metals and Materials International, 24, pp.1202~ (2018)[DOI]
- S. Chen, "Characteristics of bainitic transformation and its effects on the mechanical properties in quenching and partitioning steels", Materials Science and Enginnering : A, 803, pp.140706~ (2021)[DOI]
- F. Citrawati, "The effect of Ni on the formation of bainite in Fe-Ni lateritic steels through semi-continuous cooling method", International Journal of Technology, 11, pp.60~ (2020)[DOI]
- M. Arribas, "Austenite reverse transformation in a Q&P route of Mn and Ni added steels", Metals, 10, pp.862~ (2020)[DOI]
- A. P. Moon, "Corrosion Behavior of Newly Developed High-Strength Bainitic Railway Wheel Steels", Journal of Materials Engineering and Performance, 29, pp.3443~ (2020)[DOI]
- T. Rojhirunsakool, "Corrosion Behavior of Multiphase Bainitic Rail Steels", Metals, 12, pp.694~ (2022)[DOI]
- A. Yilmaz, "Passive Film Properties of Martensitic Steels in Alkaline Environment: Influence of the Prior Austenite Grain Size", Metals, 12, pp.292~ (2022)[DOI]
- Neetu, "Effect of various phase fraction of bainite, intercritical ferrite, retained austenite and pearlite on the corrosion behavior of multiphase steels", Corrosion Science, 178, pp.109043~ (2021)[DOI]
- C. Thee, "Numerical approach for atmospheric corrosion monitoring based on EIS of a weathering steel", Acta Metallurgica Sinica(English Letters), 28, pp.261~ (2015)[DOI]