Crystallization of amorphous Al85Y10Ni5 and Al85Y5Ni10 alloys

Microstructure and mechanical properties of bulk nanocrystalline Al88Mm5Ni5Fe2 alloy consolidated at high pressure

“…In fact, it was clearly shown in this work that a change of density in amorphous samples strongly affects the microhardness and therefore special attention might be devoted to enhance the quality of compaction of the consolidated powder to optimise the hardness of the system. Recently, very high values of hardness (>900HV ¼ 8.83 GPa) have been reported for nanocrystalline intermetallic (AlCu) 3 Zr and (AlMn) 3 Zr after consolidation in pore free bulk samples by spark plasma sintering [20] whereas less compact samples (77% of density) of similar alloys exhibit only values < 350HV ¼ 3.43 GPa) [21].…”

“…This amorphous microstructure can be achieved by rapid quenching techniques, e.g. melt-spinning technique, applied to quaternary systems containing Al, rare earth (RE) or Y, and two transition metals (TMs) [3].…”

Amorphous and nanocrystalline Al82Ni10Y8 alloy powder prepared by gas atomization

“…Kim et al [13] also investigated the heat treatment of the two alloys mentioned above, however, the equilibrium phases they got were different from those reported in Ref. [12], being a-Al, Al 3 Y, and a-Al and Al 3 Ni, respectively. The difference might be attributed to the different heat processing parameters and heat treatment history in these two investigations.…”

“…The equilibrium phases of Al 85 Y 10 Ni 5 and Al 85 Y 5 Ni 10 were Al, Al 3 Y and Al 16 YNi 3 , and Al and Al 16 YNi 3 , respectively [12]. Kim et al [13] also investigated the heat treatment of the two alloys mentioned above, however, the equilibrium phases they got were different from those reported in Ref.…”

“…Latuch et al [12] reported the crystallization process of Al 85 Y 10 Ni and Al 85 Y 5 Ni 10 alloy, as shown in Table 3. The T x1 ,T x2 ,T x3 ,T x4 found in this work fell well in the phase transition range of Al 85 Y 10 Ni 5 alloy reported by Latuch.…”