1. Structural characterization and magnetic properties of Al 82 Fe 16 TM 2 (TM: Ti, Ni, Cu) alloys prepared by mechanical alloying
- Author
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Alberto Moreira Jorge, Ji-Soon Kim, Dina V. Dudina, Nguyen Hoang Viet, Nguyen Thi Hoang Oanh, Science et Ingénierie des Matériaux et Procédés (SIMaP ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])
- Subjects
Materials science ,Alloy ,02 engineering and technology ,Crystal structure ,engineering.material ,01 natural sciences ,[SPI.MAT]Engineering Sciences [physics]/Materials ,Paramagnetism ,Structure evolution ,Magnetic properties ,0103 physical sciences ,Materials Chemistry ,Al -based amorphous alloy ,010306 general physics ,Rietveld refinement ,Metallurgy ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Microstructure ,Electronic, Optical and Magnetic Materials ,Amorphous solid ,Ferromagnetism ,Transmission electron microscopy ,Ceramics and Composites ,engineering ,Mechanical alloying ,0210 nano-technology - Abstract
International audience; In this work, the structural evolution of Al-16 at.%Fe-2 at.%TM (Transition Metals (TM): Ti, Ni, Cu) alloys during mechanical alloying and their magnetic properties were investigated. The evolution of the phase composition and microstructure of the alloys with the milling time was studied using X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM). The phase composition of the alloys was determined using the Rietveld refinement of the XRD profiles. It was shown that the interaction between the components of the powder mixtures during milling started with dissolution of Fe in the Al crystalline lattice and Al in the Fe crystalline lattice. Upon further milling, ferromagnetic AIFe(3) (DO3) formed and further transformed into paramagnetic bcc-AIFe and later into an amorphous phase. It was found that the TM alloying elements significantly influence the kinetics of the transformations during milling: the Al82Fe16Ni2 alloy was fully amorphous after 40 h of milling, the Al82Fe16Ni2 alloy required 50 h of milling to achieve complete amorphization, and the Al82Fe16Ni2 alloy was only partially amorphous after 60 h of milling. The interpretation of the observed alloying effect has been proposed. The magnetic properties of the alloys were correlated with the results of the structural characterization.
- Published
- 2017
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