Manufacturing Technology 2024, 24(6):985-991 | DOI: 10.21062/mft.2024.099

Structure Evolution of Multi-Alloyed Iron Aluminides during Two-Step Annealing

Vera Vodickova ORCID..., Pavel Hanus ORCID..., Petra Pazourkova Prokopcakova ORCID..., Martin Svec ORCID...
Faculty of Mechanical Engineering, Technical University of Liberec. Studentská 1402/2, Liberec. Czech Republic

The microstructure of single-phase (as-cast) and two-phase (after heat treatment processes) Fe3Al-based alloys doped with silicon, molybdenum, and vanadium/tungsten have been studied. The grain size and phase composition have been determined. The evolution of the secondary phase amount, morphology, and distribution during the heat treatment process has been investigated. Both alloys were heat treated at 1200°C/2 h and, subsequently, at 900 °C. For both alloys, the secondary phase formation started after heat treatment at 900°C /4h, and their amount depended on the annealing time. Vanadium atoms remain in the solid solution, while tungsten atoms partially participate in sec-ondary phase formation.

Keywords: Fe-Al-Si iron aluminides, Molybdenum, and vanadium/tungsten addition, Heat treatment
Grants and funding:

This work was supported by the Ministry of Education, Youth and Sports of the Czech Republic and the European Union - European Structural and Investment Funds in the frames of Operational Programme Research, Development, and Education - project Hybrid Materials for Hierarchical Structures (HyHi, Reg. No. CZ.02.1.01/0.0/0.0/16_019/0000843)

Received: August 11, 2024; Revised: October 11, 2024; Accepted: December 5, 2024; Prepublished online: December 13, 2024; Published: December 21, 2024  Show citation

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Vodickova V, Hanus P, Pazourkova Prokopcakova P, Svec M. Structure Evolution of Multi-Alloyed Iron Aluminides during Two-Step Annealing. Manufacturing Technology. 2024;24(6):985-991. doi: 10.21062/mft.2024.099.
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