Synthesis of Quasicrystal Al66Cu28Fe15B7 by Melt-Spinning

Abstract

The melt-spinning process, for printing high cooling rates, is one of the main means for obtaining quasicrystalline alloys. Therefore, in this work this method was used to study the development of the quasicrystalline alloy Al₆₆Cu₂₈Fe₁₅B₇. In this sense, the alloy was initially manufactured, in the respective compositions, by fusion, under an argon atmosphere, in an induction furnace, to then be subjected to the melt-spinning process, where the material was obtained in the form of tape. The sample was characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The result indicated the transformation formation of the i-AlCuFeB→ω-Al₇Cu₂Fe phases as a function of the β-Al₁₃Cu₄Fe₃ cubic phase, and a probable contribution of boron to the stability of the icosahedral phase.

DOI: http://dx.doi.org/10.17807/orbital.v13i3.1591