Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
권호 표지
DOI QR코드

DOI QR Code

Development of High Erosion Resistant Fe-based Alloy for Continuous Hot Dipping Line

연속용융 도금라인 용 고내침식 Fe계 합금 개발

  • Received : 2020.04.07
  • Accepted : 2020.06.17
  • Published : 2020.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, the material used in the hot dip galvanizing equipment was poorly corrosion-resistant, so it was performed to solve the cost and time problems caused by equipment replacement. The theoretical calculation was performed using the DV-Xα method(Discrete Variational Local-density approximation method). The alloy (STS4XX series) of the equipment currently used has a martensite phase. Therefore, the theoretical calculation was performed by applying P4 / mmm, which is a tetragonal structure. The new alloy was chosen by designing theoretical values close to existing materials. Considering elements that contribute to corrosion, most have high prices. Therefore, the design was completed by adjusting the content using only the components of the reference material in the theoretical design. The final design alloys were chosen as D6 and D9. Designed D6 and D9 were dissolved and prepared using an induction furnace. After the heat treatment process was completed, the corrosion rate of the alloys was confirmed by using the potentiodynamic polarization test. The surface of the prepared alloys were processed horizontally and then polished to # 1200 using sand paper to perform potentiodynamic polarization test. Domestic products: 4.735 mpy (mils / year), D6: 0.9166 mpy, D9: 0.3372 mpy, alloys designed than domestic products had a lower corrosion rate. Therefore, the designed alloy was expected to have better erosion resistance.

Keywords

References

  1. H.-J. Lee and M.-S. Kim, Behavior of the Surface Precipitation of Manganese Oxides during Hot-dip Galvanizing, J. Korean Inst. Surf. Eng., 48(1) (2015) 27-32. https://doi.org/10.5695/JKISE.2015.48.1.027
  2. M.-H. Hong, G.-S. Hwang, and J.-H. Chung, Surface Treatment: Microstructure of Surface Defects Observed on Continuous Hot - dip Galvanized and Galvannealed Coating Steels, J. Kor. Inst. Met. & Mater., 40(1) (2002) 83-92.
  3. T.-S. Shin, Cost Comparisons between the Hot-dip Galvanizing and the Paintion for Structural Steel, Journal of the Architectural and urban Institute, 1 (2002) 93-100.
  4. Adachi Hirohiko, Tsukada Masaru and Satoko Chikatoshi, Discrete Variational $X{\alpha}$ Cluster Calculations. I. Application to Metal Clusters, Journal of the Physical Society of Japan, 45(3) (1978) 875-883. https://doi.org/10.1143/JPSJ.45.875
  5. C.-D. Lee, S.-S. Choi, C.-S. Kang and K.-S. Shin, Effects of Solidification Rate on Microstructure and Mechanical Properties of AZ91D Magnesium Alloy, Korean journal of metals and materials, 38(9) (2000) 1225-1232.
  6. M. M. Avedesian and H. Baker, ASM International, Materials Park OH, (1999) 7.
  7. Seifert K, Hafner J, Furthmuller J and Kresse G, The influence of generalized gradient corrections to the LDA on predictions of structural phase stability: the Peierls distortion in As and Sb., Journal of physics, an Institute of Physics journal. Condensed matter. 7(19) (1995) 3683-3692. https://doi.org/10.1088/0953-8984/7/19/002
  8. J. Furthmuller, P. Kackell, F. Bechstedt, and G. Kresse, Extreme softening of Vanderbilt pseudopotentials: General rules and case studies of first-row and d-electron elements, Physical review. B, Condensed matter and materials physics, 61(7) (2000) 4576-4587. https://doi.org/10.1103/PhysRevB.61.4576
  9. R. Ninomiya, H. Yukawa, M. Morinaga and K. Kubota, An electronic approach to the prediction of the mechanical properties of magnesium alloys Journal of Alloys and Compounds, 215(1/2) (1994) 315-323. https://doi.org/10.1016/0925-8388(94)90860-5
  10. Allred, A. L, Electronegativity values from thermochemical data, Journal of inorganic and nuclear chemistry, 17(3/4) (1961) 215-221. https://doi.org/10.1016/0022-1902(61)80142-5
  11. U.-T. Jeon and Y.-S. Park, A study on the effects of N, Mo and Ni additions on the characteristics of passive film and the improvement of corrosion resistance of Fe-Cr martensitic stainless steel, The Korean Institute of Surface Engineering, 1997, 5 (1997) 61-62.
  12. J.-H. Lee, S.-K. Hwang, M.-H. Kim, S.-I. Kwun, Improvement of Zr-base Alloy for Nuclear Reactor Core Materials Application by Mo Addition, Korean journal of metals and materials, 38(6) (2000) 745-751.
  13. M. Morinaga and S. Kamado, An electronic approach to the prediction of the mechanical properties of aluminium alloys, Modelling and simulation in materials science and engineering, 1(2) (1993) 151-164. https://doi.org/10.1088/0965-0393/1/2/004
  14. M.-S. Baek, D.-J. Yoon and B.-I. Kim, A Study on the Properties of Design for the Biomaterial Ti-Ag-Zr Alloys Using DV-X${\alpha}$ Molecular Orbital Method, Korean journal of materials research., 24(4) (2014) 175-179. https://doi.org/10.3740/MRSK.2014.24.4.175
  15. M.-S. Baek, B.-S. Kang, K.-C. Baek, B.-I. Kim and D.-J. Yoon, Design of Nickel Alloys Using the Theoretical Values Calculated from the Electronic State Energies, Korean journal of materials research., 25(11) (2015) 642-646. https://doi.org/10.3740/MRSK.2015.25.11.642
  16. D.-S. Bae and S.-B. Won, Effects of Si Addition on Grain Size Refinement in Ferrite-Martensite Duplex Steels, Korean Journal of Metals and Materials, 25(10) (1987) 675-686.
  17. S.-M. Lee and C.-Y. Kang, Effect of Microstructure on the Damping Capacity of 12Cr Martensitic Heat-resisting Steel, Journal of the Korean Society for Power System Engineering, 14(2) (2010) 78-83.
  18. C.-H. Lee, Effect of Microstructures on Cleavage Fracture Strength in Bainitic and Martensitic Steels, Journal of the Korean Society for Heat Treatment, 27(3) (2014) 133-140. https://doi.org/10.12656/jksht.2014.27.3.133
  19. M.-G. Kim and J.-K. Ji, Effects of the Type of Martensite on Fatigue Limit of Ferrite-Martensitic Steel, Journal of industrial technology, 20(B) (2000) 87-94.
  20. K.-T. Oh, H.-M. Sim, C.-J. Hwang, K.-N. Kim, Propertise of TiAg alloy for dental application, J.Korean Soc. Dent. Mater, 29(3) (2002) 221.
  21. Fontana, Mars Guy., Corrosion Engineering, p.576, McGraw-Hill Book Company, (1987) 59-65.
  22. J.-H. Han, K.-H. Lee, M.-C. Shin, Corrosio Characteristics of Titaniym Alloys for Medical Implant, Analytical sci. Technol.. 9(2) (1996) 192.