The crystallization process in a new multicomponent Fe-based bulk amorphous alloy: A kinetic study approach

In the current work, a new alloy composition based on Fe-B-Si system with a high glass-forming ability was developed and its non-isothermal crystallization kinetics was investigated. The glass-forming ability of Fe74B20Nb2Si2Hf2 alloy was determined by thermodynamic calculations, including the signi...

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Bibliographic Details
Published in:Materials characterization 2023-02, Vol.196, p.112602, Article 112602
Main Authors: Rezaei-Shahreza, Parisa, Hasani, Saeed, Seifoddini, Amir, Nabiałek, Marcin, Czaja, Pawel
Format: Article
Language:English
Subjects:
Bulk metallic glasses (BMGs)
Crystallization
Fitting models
IKP method
Non-isothermal kinetics
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Summary:In the current work, a new alloy composition based on Fe-B-Si system with a high glass-forming ability was developed and its non-isothermal crystallization kinetics was investigated. The glass-forming ability of Fe74B20Nb2Si2Hf2 alloy was determined by thermodynamic calculations, including the significant negativity of the mixing enthalpy (−21.22 kJ/mol) and the high value of δ (12.69) and Δχ (0.12). Moreover, the critical cooling rate and critical thickness parameters for this bulk metallic glass were obtained as 80 K/s and 3.119 mm, respectively. Also, microstructural evolutions following the annealing process were evaluated by scanning and transmission electron microscopes. The study revealed the appearance of Fe23B6, α-Fe, and Fe2B crystalline phases, which were formed during partial annealing treatment. The local activation energy values in a wide range of α (0.1 
ISSN:1044-5803
1873-4189
DOI:10.1016/j.matchar.2022.112602