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Role of rare-earth metals (R) in the appearance of relaxation processes in AL-Ni-R metal melts
Anatoly L Beltyukov1, Svetlana G Menshikova1, Vladimir I Lad'yanov1
1The Udmurt Federal Research Centre of the Ural Branch of the Russian Academy of Sciences, Izhevsk, Russia.
Abstract:
The temperature and time dependences of the viscosity of liquid ternary alloys Al87Ni8Y5, Al86Ni8La6, Al86Ni8Ce6, Al86Ni6Co8, Al86Ni10Co4and binary melts Al90(Y/Ni/Co)10have been studied after different temperature-time treatment of the melt. It is shown that long-time relaxations in the Al-TM-R melts occur only after the phase transition 'crystal-liquid' due to the melt transition from the non-equilibrium to equilibrium state. The non-equilibrium state of the melt appears due to inheriting non-equilibrium atomic groups during melting; the atomic groups have ordering characteristic of chemical compounds of the AlRtype present in solid-state alloys.
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