The thermal expansion coefficient of mechanically alloyed Al-Cu-Fe quasicrystalline powders

Synthesis of single-phase Al–Cu–Fe quasicrystals using high-energy ball-milling

“…The exothermal reactions at temperatures above 500°C are related to the formation of the iQC phase. Similar DSC traces were reported by Salimon et al [10] for mechanically alloyed powders with compositions Al 67 Cu 23 Fe 10 , Al 67 Cu 22 Fe 11 and Al 65 Cu 23 Fe 12 . The small difference in atom positions between the iQC phase and the Al 7 Cu 2 Fe precursor explains the low energy required for the Al 7 Cu 2 Fe to iQC phase transition.…”

“…Several studies provided evidence for the formation of QC phases upon adequate thermal treatment of Al 65 -Cu 23 Fe 12 mechanically alloyed powders [6][7][8][9][10][11]. The formation of Al-Cu-Fe quasicrystals from atomized powders [12] or in cold-rolled multilayers [13] was also recently reported.…”

Synthesis of (Al65Cu20Fe15)100−xSix quasicrystalline alloys by mechanical alloying

“…1) i.e., Al 65 Cu 20 Fe 15 , by the present authors [4][5][6] showed the presence of Al 2 Cu and the b-phases (B2 structure) after 20 h of milling. The evolution of the iphase was observed along with the b-phase after 30 h of milling.…”

Formation of AlCuFe icosahedral quasicrystal by mechanical alloying: XAFS and XRD studies

“…Among them, the ternary AlCuFe alloy is of the most interest [2][3][4][5][6], thanks to the exceptional structure and excellent properties, such as the low electrical and thermal conductivity, the high hardness, and the low friction as well as the good oxidation resistance. In addition, the lack of toxicity, easy availability and the favorable costs of their alloying elements also make them possible in many practical applications [7][8][9].…”