Metal Science and Heat Treatment

, Volume 57, Issue 3–4, pp 138–142 | Cite as

Effect of Tungsten Additive on Structural Transformations in Alloys of the Fe – Cr – Co – Ti System

  • E. Kh. Zhukova
  • V. S. Shubakov
  • A. G. Savchenko
  • D. G. Zhukov

Structural transformations of the single-phase α-solid solution in polycrystalline specimens of Fe – 30% Cr – 15% Co – 0.5% Ti alloys containing up to 5 wt.% W are studied after quenching and annealing in the range of 600 – 1200°C. The temperature ranges of existence of single-phase α-solid solution in stable and metastable conditions, the temperatures of the start of precipitation of γ- and σ-phases, the temperature of the start of decomposition yielding a high-coercivity state, and the Curie temperature are determined. The results of the thermomagnetic analysis are used to make a suggestion that in the course of the α→ (α1 + α2) transformation tungsten passes both to the α2 -phase and to the α1 -phase.

Key words

alloys of the Fe – Cr – Co – system structural transformations α-, γ-, and σ-phases Curie temperature permanent magnets with nanocrystalline structure 


The work has been performed within fulfillment of State Assignment No. 2014/113 by NITU “MISiS” in the sphere of scientific activity within the base part of the State Assignment of the Ministry of Education and Science of the Russian Federation.


  1. 1.
    Z. Ahmad, A. ul Haq, S.W. Husain, and T. Abbas, “ Effect of Mo addition on magnetic properties of Fe – 28Cr – 15Co hard magnets,” Physica B, 321, 96 – 103 (2002).Google Scholar
  2. 2.
    I. S. Belyatskaya, E. A. Sukhareva, and V. V. Sadchikov, “A study of the anisotropy of single crystals of Fe – Cr – Co and Fe – Cr – Co – Mo alloys,” Izv. Vysh. Ucheb. Zaved., Fizika, 23(11), 106 – 108 (1983).Google Scholar
  3. 3.
    V. S. Shubakov, T. G. Emyasheva, and B. A. Samarin, “Structural transformations in tempering of highly coercive alloy Fe – 15% Co – 30% Cr – 3% Mo,” Metally, No. 4, 59 – 63 (2004).Google Scholar
  4. 4.
    I. S. Belyatskaya, E. V. Arabei, and A. I. Umpelova, “Magnetic properties and structure of single crystals of Fe – Cr – Co – W alloys,” Fiz. Met. Metalloved., 53(5), 906 – 910 (1982).Google Scholar
  5. 5.
    V. V. Belozerov, M. A. Uimin, A. E. Ermakov, et al., “Effect of tungsten and gallium on the structure and magnetic and mechanical properties of alloys of the Fe – Cr – Co system,” Fiz. Met. Metalloved., 106(5), 489 – 497 (2008).Google Scholar
  6. 6.
    I. V. Cherednichenko, Formation of Highly Coercive State and Magnetic Properties in alloys of the Fe – Cr – Co – Mo System, Author’s Abstract of Candidate’s Thesis [in Russian], Moscow (2010).Google Scholar

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • E. Kh. Zhukova
    • 1
  • V. S. Shubakov
    • 1
  • A. G. Savchenko
    • 1
  • D. G. Zhukov
    • 1
  1. 1.National University of Science and Technology “MISiS” (NITU “MISiS”)MoscowRussia

Personalised recommendations