Synthesis of an amorphous Zr–Al–Ni–Cu alloy with large supercooled liquid region by cold-rolling of elemental foils

Microstructure studies of Zr65Cu17.5Al7.5Ni10 and Zr65Cu15Al10Ni10 glass forming alloys: Phase morphologies and undercooled melt solidification

“…Several lines are common to several crystalline phases. For instance, line 4 is attributed to hexagonal (h) (Zr, (Cu, Al, Ni)) [17] in which Cu, Al and Ni have the same proportion (10 at.%), h-Zr 2 Al [7], orthorhombic (o)-ZrAl [18,19], line 5 to tetragonal (t)-Zr 2 Cu [12,20e23], o-Cu 10 Zr 7 [24]. Crystalline cubic (c) c-Zr 2 Ni, c-CuZr, c-Cu 5 Zr, c-(Zr, Cu) and monoclinic (m)-Ni 7 Zr 2 [25] have been also identified in the XRD spectra.…”

Cyclic transformation between nanocrystalline and amorphous phases in Zr based intermetallic alloys during ARB

“…Severe plastic deformation processes, such as friction stir processing [1], mechanical alloying (MA) [2,3] and accumulative roll bonding (ARB) [4,5], have received considerable attention in recent years. High plastic strains and ultrafine or even amorphous structures with outstanding properties can be induced.…”

On the latest stage of transformation from nanocrystalline to amorphous phases during ARB: Simulation and experiment

“…This kind of method forces the atoms of adopted elements to diffuse in a solid state under low temperature in order to obtain the metastable amorphous phases. Both the processes of mechanical alloying (MA) [1,2] and accumulative roll bonding (ARB) [3,4] belong to the solid-state reaction routes. It has been widely studied that the amorphization of MA occurred as the introduced lattice defects make the free energy of the crystalline phase higher than that of the amorphous phase [5].…”