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Probing the Relationship of Long-Range Order in Nanodomain FeCo Alloys with Ternary Additions Using Neutron Diffraction

  • Symposium: Neutron and X-Ray Studies of Advanced Materials
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Abstract

The effects of tailoring FeCo alloys with addition of ternary elements Pt, Pd, Mn, Ir, and Re have been investigated. In the composition range of 30 to 70 pct Co, FeCo alloys undergo a continuous order-disorder phase transition at a maximum temperature of 730 °C at the equiatomic composition. The effects of temperature and composition on the degree of long-range order in six alloys (Fe70Co30, Fe67Co30Pt3, Fe67Co30Pd3, Fe67Co30Mn3, Fe67Co30Ir3, and Fe67Co30Re3; at. pct) were compared using neutron diffraction. The transition goes along with growing of antiphase domains during the heating process.

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Acknowledgments

The authors thank Alexander Schmidt and Alois Pscheidt for their support on the high-temperature furnace.

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Authors and Affiliations

  1. Technische Universität München ZWE, FRM II, 85747, Garching, Germany

    Ralph Gilles (Senior Scientist), Michael Hofmann (Senior Scientist), Feng Liang (Scientific) & Markus Hoelzel (Scientific Staff Member (Postdoc)

  2. GE Global Research, Niskayuna, NY, 12301, USA

    Yan Gao (Senior Scientist), Frank Johnson (Senior Scientist), Luana Iorio (Senior Scientist) & Michael Larsen (Technician)

  3. Department of Nuclear Physics, CIAE, 102413, Beijing, P.R. China

    Feng Liang (Scientific)

  4. Technische Universität Darmstadt, FB Material- und Geowissenschaften, Petersenstr. 23, 64287, Darmstadt, Germany

    Markus Hoelzel (Scientific Staff Member (Postdoc)

  5. Steinmann Institut für Geologie, Mineralogie, Paläontologie, Universität Bonn, 53115, Bonn, Germany

    Bruno Barbier (Scientific)

Authors
  1. Ralph Gilles
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  2. Michael Hofmann
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  3. Yan Gao
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  4. Frank Johnson
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  5. Luana Iorio
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  6. Michael Larsen
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  7. Feng Liang
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  8. Markus Hoelzel
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  9. Bruno Barbier
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Corresponding author

Correspondence to Ralph Gilles.

Additional information

This article is based on a presentation given in the symposium “Neutron and X-Ray Studies of Advanced Materials,” which occurred February 15–19, 2009, during the TMS Annual Meeting in San Francisco, CA, under the auspices of TMS, TMS Structural Materials Division, TMS/ASM Mechanical Behavior of Materials Committee, TMS: Advanced Characterization, Testing, and Simulation Committee, and TMS: Titanium Committee.

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Gilles, R., Hofmann, M., Gao, Y. et al. Probing the Relationship of Long-Range Order in Nanodomain FeCo Alloys with Ternary Additions Using Neutron Diffraction. Metall Mater Trans A 41, 1144–1150 (2010). https://doi.org/10.1007/s11661-009-9933-y

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  • DOI: https://doi.org/10.1007/s11661-009-9933-y

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