First-time synthesis of an unparalleled Al72Cr15Ni13 decagonal quasicrystalline phase with the help of mechanical alloying and annealing procedures: A comparative study

An X-ray diffractometer, a field-emission scanning electron microscope, and a high-resolution transmission electron microscope were utilized to characterize the structural and microstructural evolutions of the AlCrNi alloy powders. The single-phase Cr (Al, Ni) nanostructured solid-solution was synthesized through the high-energy planetary ballmilling in 96 h. It was turned out that the decagonal quasicrystal obtains after the annealing treatment at 1035 degrees C. The formation of the decagonal quasicrystalline phase in the AlCrNi alloy system was first investigated in the present article. A differential thermal analyzer was employed for the examination of the thermal performance of the AlCrNi alloy powders. The specific surface area of the mechanically alloyed and heat-treated AlCrNi alloy powders was determined through the BET analysis without any further alkali leaching. The specific surface area of the AlCrNi alloy powders containing the decagonal quasicrystalline phase possesses a high value of 1.75 m(2) g(-1). (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

Characterization of the structural and microstructural evolutions of AlCrNi alloy powders was conducted using an X-ray diffractometer, a field-emission scanning electron microscope, and a high-resolution transmission electron microscope. It was found that a single-phase Cr (Al, Ni) nanostructured solid-solution was synthesized through high-energy planetary ballmilling for 96 hours, and a decagonal quasicrystal formed after annealing at 1035 degrees C. This article investigates the formation of the decagonal quasicrystalline phase in the AlCrNi alloy system for the first time.