Relaxation processes in Al-R (R= Ce, Sm) glass-forming alloys

Bel’tyukov, A. L.; Rusanov, B. A.; Yagodin, D. A.; Rusanova, A.I.; Sterkhov, Evgenii; Son, L.; Lad’yanov, V. I.

doi:10.1016/j.ssc.2022.115044

Cited by 5 publications

(5 citation statements)

References 18 publications

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“…The character of the time dependences of viscosity and the relaxation times and also the effect of the decrease of the relaxation time at the increase of the temperature are in good agreement with the data obtained earlier during the investigation of the time dependences of the viscosity of liquid alloys of the Al-(Ni,Co)-Re systems [30,34] and binary alloys Al 91 Ce 9 , Al 90 Sm 10 [25] and Al 91 La 9 [26].…”

Section: Relaxation Processessupporting

confidence: 90%

“…The increase of temperature leads to a decrease in the duration of the property value relaxation [30]. More recently, similar relaxation processes have been found on the polytherms of the viscosity and density of the binary systems Al-Ce(Sm) [25] and Al-La [26].…”

Section: Introductionsupporting

confidence: 69%

“…During the investigation of the features of the structural state of melts and interparticle interaction in them, indirect methods are frequently used, which are based on studying temperature and concentration dependences of structure-sensitive properties of a melt such as viscosity, density, electrical resistance, magnetic susceptibility [11,[20][21][22]. The existing data on the investigation of the properties of melts of the binary Al-R [23][24][25][26][27], ternary Al-TM-R [28][29][30] and more complex systems based on them [30][31][32] confirm the conclusion about the micro-heterogeneous structure of the melts. It is also shown that after melting near the liquidus temperature the structure of the melts becomes more complex due to the appearance of the nonequilibrium state [12,[28][29][30].…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the conditions of the appearance of such relaxation processes in the liquid AL-TM-R alloys have not been fully studied. The nonequilibrium of a melt is mainly explained by inheritance during the melting of compounds with a strong interatomic interaction, high temperature of melting of these compounds and their gradual destruction [25][26][27]30]. The Al-TM systems satisfy these conditions [36]; however, in the melts of the said systems relaxation processes have not been earlier found.…”

Section: Introductionmentioning

confidence: 99%

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Role of rare-earth metals (R) in the appearance of relaxation processes in AL–Ni–R metal melts

Bel’tyukov

Menshikova

Lad'yanov

2023

J. Phys.: Condens. Matter

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The temperature and time dependences of the viscosity of liquid ternary alloys Al87Ni8Y5, Al86Ni8La6, Al86Ni8Ce6, Al86Ni6Co8, Al86Ni10Co4 and binary melts Al90(Y/Ni/Co)10 have 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 AlxRу type present in solid-state alloys.

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Section: Relaxation Processessupporting

confidence: 90%

Section: Introductionsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Role of rare-earth metals (R) in the appearance of relaxation processes in AL–Ni–R metal melts

Bel’tyukov

Menshikova

Lad'yanov

2023

J. Phys.: Condens. Matter

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“…No hysteresis was found at repeated heating-cooling cycles without crystallization. As it was shown in works [21,31], a significant overheating of Al-R and Al-Ni-Co-R melts leads to abnormal changes in viscosity and density temperature dependencies due to the processes of large-scale inhomogeneities decomposition. This decomposition can be realized by long-time isothermal expositions at elevated temperatures [20,31].…”

Section: Resultsmentioning

confidence: 78%

Viscosity of Al–Ni–Co–Nd(Sm) glass-forming melts at high temperatures

Rusanova,

Rusanov,

Beltyukov

et al. 2024

J. Phys.: Condens. Matter

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Obtaining amorphous alloys with good mechanical and anticorrosion properties is an important problem of modern condensed matter physics. Since the preparation of amorphous alloys involves casting them from liquid state, information on the properties of the melts is needed. Viscosity is one of the most informative structure-sensitive property of melts. In this paper viscosity of some glass-forming Al-Ni-Co-Nd(Sm) melts with different ratio of transition metals was studied using damped oscillation method in a wide temperature range up to 1550 K. Activation energies of the viscous flow were calculated from the experimental data. The hysteresis of viscosity temperature dependences during heating and subsequent cooling was found. It can be associated with a melt transition to a more homogeneous state. The repeated heating and cooling of the melts without crystallization lead to Arrhenius type of viscosity temperature dependences.

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