Thermally Induced Structural Transformations of Fe40Ni40P14B6 Amorphous Alloy

0463858 - ÚFM 2017 RIV US eng J - Journal Article
Vasić, M. - Roupcová, Pavla - Pizúrová, Naděžda - Stevanović, S. - Blagojević, V. A. - Žák, Tomáš - Minić, Dragica M.
Thermally Induced Structural Transformations of Fe40Ni40P14B6 Amorphous Alloy.
Metallurgical and Materials Transactions A. 47A, č. 1 (2016), s. 260-267. ISSN 1073-5623. E-ISSN 1543-1940
R&D Projects: GA MŠMT 1M0512
Institutional support: RVO:68081723
Keywords : Fe-Ni-P * soft-magnetic properties * metallic glasses * corrosion resistance * supercooled liquid * crystallization * phase * temperature * Mossbauer
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.874, year: 2016

Thermal stability and thermally induced structural transformations of Fe40Ni40P14B6 amorphous alloy were examined under non-isothermal and isothermal conditions. Formation of metastable alpha-(Fe,Ni), and stable gamma-(Fe,Ni) and (Fe,Ni)(3)(P,B) crystalline phases as the main crystallization products was observed, while the presence of small amounts of other crystalline phases like Fe23B6 and Fe2NiB was indicated by electron diffraction in HRTEM. Thermomagnetic curve indicated that Fe content in different crystalline phases is very different, resulting in markedly different Curie temperatures after crystallization. Transmission electron microscopy and atomic force microscopy study suggested multiple-layered platelet-shaped morphology, both on the surface and in the bulk of the crystallized alloy sample. The thermal treatment heating rate and maximum temperature affected surface roughness and grain size inhomogeneity.
Permanent Link: http://hdl.handle.net/11104/0262967