Kinetics of crystallization of a Fe-based multicomponent amorphous alloy

Bulletin of materials science

Mukesh Chawda¹  T Lilly Shanker Rao³  Arun Pratap²  Kinnary Patel² 

[1] Physics Department, Polytechnic, M.S. University of Baroda, Vadodara 390 002, India$$Physics Department, Polytechnic, M.S. University of Baroda, Vadodara 390 002, IndiaPhysics Department, Polytechnic, M.S. University of Baroda, Vadodara 390 002, India$$;Applied Physics Department, Faculty of Technology and Engineering, The M.S. University of Baroda, Vadodara 390 001, India$$Applied Physics Department, Faculty of Technology and Engineering, The M.S. University of Baroda, Vadodara 390 001, IndiaApplied Physics Department, Faculty of Technology and Engineering, The M.S. University of Baroda, Vadodara 390 001, India$$;Electronics Department, Narmada College of Science and Commerce, Zadeshwar, Bharuch 392 011, India$$Electronics Department, Narmada College of Science and Commerce, Zadeshwar, Bharuch 392 011, IndiaElectronics Department, Narmada College of Science and Commerce, Zadeshwar, Bharuch 392 011, India$$

关键词: Fe-based metallic glass;    crystallization kinetics;    Mössbauer study.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The Fe-based multicomponent amorphous alloys (also referred to as metallic glasses) are known to exhibit soft magnetic properties and, it makes them important for many technological applications. However, metallic glasses are in a thermodynamically metastable state and in case of high temperature operating conditions, the thermally activated crystallization would be detrimental to their magnetic properties. The study of crystallization kinetics of metallic glasses gives useful insight about its thermal stability. In the present work, crystallization study of Fe₆₇Co₁₈B₁₄Si₁ (2605CO) metallic glass has been carried out using differential scanning calorimetry (DSC) technique. Mössbauer study has also been undertaken to know the phases formed during the crystallization process. The alloy shows two-stage crystallization. The activation energy has been derived using the Kissinger method. It is found to be equal to 220 kJ/mol and 349 kJ/mol for the first and second crystallization peaks, respectively. The Mössbauer study indicates the formation of ð›�?-(Fe, Co) and (Fe, Co)₃B phases in the alloy.

【 授权许可】

Unknown