The study of structural relaxation kinetics in amorphous alloy Fe73.5Nb3Cu1Si13.5B9 using Curie temperature measurements

✍ Scribed by E.V. Kaevitser; S.D. Kaloshkin; B.V. Jalnin; V.V. Tcherdyntsev; Yu.V. Baldokhin

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 205 KB
• Volume: 375-377
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2003.10.084

✦ Synopsis

The structural relaxation and the initial stage of crystallization of rapidly quenched finemet-type Fe 73.5 Nb 3 Cu 1 Si 13.5 B 9 alloy were studied using both continuous heating and isothermal differential scanning calorimetry (DSC). It is found that Curie temperature of amorphous phase T A c increases with the annealing temperature, as well as with an increase in the heat treatment duration. The crystallization process starts at 460 • C. The microstructural evolution and the redistribution of elements were investigated by DSC, thermomagnetic analysis, Mössbauer spectroscopy and X-ray diffraction methods. The pre-crystallization process results in the changes of hyperfine interactions in the amorphous phase, which are caused by clustering during the relaxation process.