On the synthesis of Zr-based bulk amorphous alloys from glass-forming compounds and elemental powders

Bulk amorphous alloy Fe72Al5Ga2C6B4P10Si1 produced by mechanical alloying

“…The pre-alloys were chosen so as to be glass forming [15,16] or easily amorphized compounds (of Ti 3 P and Fe 3 C structure types, respectively). However, both pre-alloys in initial state proved to be constituted of two phases.…”

Influence of initial phase composition on glass-forming ability of Co-based alloys

“…The part of these metastable phases should have shortrange order similar to that in liquid, because the appearance of non-equilibrium phases is promoted by kinetics factors. These phases may be related to glass-forming compounds [8,9] as their presence in the alloy lead to increasing of GFA.…”

Consolidation of amorphous ball-milled Zr–Cu–Al and Zr–Ni–Ti–Cu powders

“…TEM investigations [4] show amorphous stripes located at interfaces of elemental layers suggesting amorphization process is initiated at grain boundaries. However, in the paper of Djakonova et al [8] amorphization process was accelerated when started from milling of mixture of glass compounds from ZrNiCuAl system, which suggests that intermetallic compound play an important role in this system. It is contrary to the amorphization observed in TiAl where extended solid solution formed preceding amorphization; however, not in NiAl where instantly formed intermetalllic phase is stabilized [9].…”

“…Glass formation by heavy deformation and mechanical alloying has been found to be an alternative method of amorphization for several zirconium, nickel-, copper-or titanium-based alloys [1][2][3][4][5][6][7][8][9][10]. Most extensively studied using this method were ZrAlCuNi alloys [1,4,6,8].…”

“…Most extensively studied using this method were ZrAlCuNi alloys [1,4,6,8]. TEM investigations [4] show amorphous stripes located at interfaces of elemental layers suggesting amorphization process is initiated at grain boundaries.…”