Fabrication and Characterization of Mechanical Alloyed Nanocrystalline FeNi Alloy

Recently nanocrystalline magnetic materials have been intensively investigated because of their remarkable properties such as saturation magnetization, coercivity, magnetic ordering temperature and hyperfine magnetic field which significantly differ from those of microcrystalline materials and are sensitive to the structure and microstructure [1]. FeNi alloys are industrially used for high-saturation magnetization and low coercivity applications. The benefits found in these magnetic nanostructured alloys stem from their chemical and structural properties which are important for the magnetic properties [2]. Mechanical alloying (MA) is a powerful technique which allows the preparation of nanostructured FeNi alloys [3,4]. The aim of the present work is first to produce the binary Fe50Ni50 system by high-energy ball alloying technique. The powders were investigated by means of microstructural observations by scanning microscopy and X-ray diffraction. Also Microhardness of the powders were measured.