Journal of Phase Equilibria and Diffusion

, Volume 40, Issue 1, pp 79–85 | Cite as

Isothermal Section of the B-Cr-Fe System at 873 K

  • Viera HomolováEmail author
  • Lucia Čiripová
  • Ján Kepič


An experimental study of the phase equilibria of the B-Cr-Fe ternary system at 873 K by means of x-ray diffraction and scanning electron microscopy has been carried out. Iron and chromium solid solutions, six chromium borides Cr2B, Cr5B3, CrB, Cr3B4, CrB2 and CrB4, two iron borides Fe2B and FeB, intermetallic σ phase, and β-rhombohedral B were identified in the B-Cr-Fe model alloys after long-term annealing (2160-2300 h). Solubilities of chromium in iron borides and iron in chromium borides were determined. No ternary phase was found in the system. Based on the experimental results, an isothermal section of the B-Cr-Fe system at 873 K was established.


boride isothermal section phase diagram ternary system 



The authors are grateful to the Slovak Grant Agency VEGA (Project No. 2/0073/18) and the Slovak Research and Development Agency (Project No. APVV-15-0049) for financial support.


  1. 1.
    G. Zeiler, S. Paul, and E. Plesiutschnig, 9-10% Cr steel forgings for USC turbines—experiences in manufacturing and development status of MARBN steels, in Advances in Materials Technology for Fossil Power Plants—Proceedings from the 8th International Conference 2016, Portugal; 11-14 October 2016, Algarve, 2016, pp. 778-789Google Scholar
  2. 2.
    L. Falat, L. Čiripová, V. Homolová, and A. Kroupa, The Influence of Isothermal Ageing and Subsequent Hydrogen Charging at Room Temperature on Local Mechanical Properties and Fracture Characteristics of Martensitic/Bainitic Weldments for Power Engineering, J. Min. Metall. B, 2017, 753(3), p 373-382CrossRefGoogle Scholar
  3. 3.
    S. Hernandez, J. Hardell, H. Winkelmann, M.R. Ripoll, and B. Prakash, Influence of Temperature on Abrasive Wear of Boron Steel and Hot Forming Tool Steels, Wear, 2015, 338-339, p 27-35CrossRefGoogle Scholar
  4. 4.
    C. Baron, H. Springer, and D. Raabe, Development of High Modulus Steels Based on the Fe-Cr-B System, Mater. Sci. Eng. A, 2018, 724, p 142-147CrossRefGoogle Scholar
  5. 5.
    X. Zong, W. Jiang, and Z. Fan, A Study of the Microstructures and Performance of Chromium Boride Coatings on AISI, 52100 Steel, Mater. Tehnol., 2018, 52(2), p 225-229CrossRefGoogle Scholar
  6. 6.
    H.V. Pokhmurs’ka, M.M. Student, A.R. Dzyubyk, A.A. Voitovych, and O.P. Khlopyk, Corrosion Resistance of the Metal Vibration Deposited from Flux-Core Wires Based on the FE-CR-B System, Mater. Sci., 2017, 52(5), p 694-699CrossRefGoogle Scholar
  7. 7.
    M.B. Chepiga and J.B. Kuzma, Fazovyje ravnovesia v sisteme Cr-Fe-B, Izvestija vyssich ucebnych zavedenij, Chernaja, Metalurgija, 1970, 3, p 127-130 (in Russian)Google Scholar
  8. 8.
    E. Gorbunov and F.M. Bodurjan, Phase Equilibria in Ternary Cr-B-Fe System, Metal. Tverd. Splav., 1976, 16, p 172-178 (in Russian)Google Scholar
  9. 9.
    S. Wang, X. Yu, J. Zhang, Y. Zhang, L. Wang, K. Leinenweber, H. Xu, D. Popov, C. Park, W. Yang, D. He, and Y. Zhao, Crystal Structures, Elastic Properties, and Hardness of High-Pressure Synthesized CrB2 and CrB4, J. Superhard Mater., 2014, 36(4), p 279-287CrossRefGoogle Scholar
  10. 10.
    D. Kotzott, M. Ade, and H. Hillebrecht, Synthesis and Crystal Structures of α- and β-Modifications of Cr2IrB2 Containing 4-Membered B4 Chain Fragments, the τ-Boride Cr7.9 Ir14.1B6 and Orthorhombic Cr2B, Solid State Sci., 2008, 10, p 291-302ADSCrossRefGoogle Scholar
  11. 11.
    C. Gianoglio, G. Pradelli, and M. Vallino, Solid State Equilibria in the Cr-Fe-B System at the Temperature of 1373 K, Metal. Sci. Technol., 1983, 1(2), p 51-57Google Scholar
  12. 12.
    V. Homolová and L. Čiripová, Experimental Investigation of Isothermal Section of the Fe-B-Cr Phase Diagram at 1353 K, Adv. Mater. Sci Eng., 2017, Article ID 2703986.
  13. 13.
    P. Rogl, Cr-B-C (Chromium-Boron-Carbon), Phase Diagrams of ternary Metal-Boron-Carbon Systems, G. Effenberg, Ed., ASM International, Geauga County, 1998, p 36-52 Google Scholar
  14. 14.
    E. Campbell and U.R. Kattner, Assessment of the Cr-B System and Extrapolation to the Ni-Al-Cr-B Quaternary System, Calphad, 2002, 26, p 477-490CrossRefGoogle Scholar
  15. 15.
    P. Villars, Pearson’s Handbook, The Materials Information Society, Materials Park OH, 1997Google Scholar
  16. 16.
    T. Van Rompaey, K.C. Kumar Hari, and P. Wollants, Thermodynamic Optimization of the B-Fe System, J. Alloys Compd., 2002, 334, p 173-181CrossRefGoogle Scholar
  17. 17.
    B.J. Lee, On the Stability of Cr Carbides, Calphad, 1992, 16, p 121-149CrossRefGoogle Scholar

Copyright information

© ASM International 2019

Authors and Affiliations

  • Viera Homolová
    • 1
    Email author
  • Lucia Čiripová
    • 1
  • Ján Kepič
    • 1
  1. 1.Institute of Materials ResearchSlovak Academy of SciencesKosiceSlovakia

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