Influence of microstructural inhomogeneity of individual sides of Fe81Si4B13C2 amorphous alloy ribbon on thermally induced structural transformations

0369656 - ÚFM 2012 RIV CH eng J - Journal Article
Minić, Dragica, M. - Blagojević, V. - Minić, Dušan M. - Žák, Tomáš
Influence of microstructural inhomogeneity of individual sides of Fe81Si4B13C2 amorphous alloy ribbon on thermally induced structural transformations.
Materials Chemistry and Physics. Roč. 130, č. 3 (2011), s. 980-985. ISSN 0254-0584. E-ISSN 1879-3312
R&D Projects: GA MŠMT 1M0512
Institutional research plan: CEZ:AV0Z20410507
Keywords : Amorphous materials * Alloys * X-ray diffraction * Microstructure
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.234, year: 2011

As a result of the preparation process of Fe81Si4B13C2 amorphous alloy ribbon, a difference has been observed between the opposite sides of the ribbon in microstructure and surface morphology. Influence of these differences on thermally induced structural transformations was studied. Thermal treatment below 600 ◦C had a significant influence on the evolution of the microstructure, as well as phase composition of individual sides of the ribbon. Treatment at higher temperatures caused the microstructural differences between two sides to decrease significantly. Phase composition of the alloy samples showed the opposite trend: the differences observed were the greatest in the fully crystallized alloy, after treatment at 700 ◦C. These differences are the result of different numbers of nucleation sites for Fe2B phase on respective sides of the ribbon, leading to 30% difference in its content on different sides in the fully crystallized alloy.
Permanent Link: http://hdl.handle.net/11104/0006752