Temperature dependence of the resistivity in metallic glasses

1977 ◽  
Vol 16 (4) ◽  
pp. 1694-1698 ◽  
Author(s):  
S. R. Nagel
Keyword(s):  
Temperature Dependence ◽  
Metallic Glasses

Predicting temperature dependence of the shear modulus of metallic glasses using calorimetric data

2019 ◽  
Vol 168 ◽  
pp. 10-13 ◽  
Author(s):  
A.S. Makarov ◽  
Yu.P. Mitrofanov ◽  
G.V. Afonin ◽  
N.P. Kobelev ◽  
V.A. Khonik
Keyword(s):  
Shear Modulus ◽  
Temperature Dependence ◽  
Metallic Glasses ◽  
Calorimetric Data

scholarly journals Vitrification decoupling from α-relaxation in a metallic glass

2020 ◽  
Vol 6 (17) ◽  
pp. eaay1454
Author(s):  
Xavier Monnier ◽  
Daniele Cangialosi ◽  
Beatrice Ruta ◽  
Ralf Busch ◽  
Isabella Gallino
Keyword(s):  
Metallic Glass ◽  
Temperature Dependence ◽  
Metallic Glasses ◽  
Materials Science ◽  
Scanning Calorimetry ◽  
Fictive Temperature ◽  
Fundamental Properties ◽  
Fast Scanning Calorimetry ◽  
Arrhenius Temperature Dependence ◽  
Arrhenius Temperature

Understanding how glasses form, the so-called vitrification, remains a major challenge in materials science. Here, we study vitrification kinetics, in terms of the limiting fictive temperature, and atomic mobility related to the α-relaxation of an Au-based bulk metallic glass former by fast scanning calorimetry. We show that the time scale of the α-relaxation exhibits super-Arrhenius temperature dependence typical of fragile liquids. In contrast, vitrification kinetics displays milder temperature dependence at moderate undercooling, and thereby, vitrification takes place at temperatures lower than those associated to the α-relaxation. This finding challenges the paradigmatic view based on a one-to-one correlation between vitrification, leading to the glass transition, and the α-relaxation. We provide arguments that at moderate to deep undercooling, other atomic motions, which are not involved in the α-relaxation and that originate from the heterogeneous dynamics in metallic glasses, contribute to vitrification. Implications from the viewpoint of glasses fundamental properties are discussed.

scholarly journals Elastic Properties and Glass Forming Ability of the Zr50Cu40Ag10 Metallic Alloy

2020 ◽  
Vol 310 ◽  
pp. 145-149 ◽  
Author(s):  
Ramil M. Khusnutdinoff ◽  
Anatolii V. Mokshin
Keyword(s):  
Glass Transition ◽  
Shear Modulus ◽  
Temperature Dependence ◽  
Elastic Properties ◽  
Metallic Glasses ◽  
Liquid Glass ◽  
Glass Forming Ability ◽  
Metallic Alloy ◽  
Poisson's Ratio ◽  
Glass Forming

The elastic properties of the Zr50Cu40Ag10 metallic alloy, such as the bulk modulus B, the shear modulus G, the Young’s modulus E and the Poisson’s ratio σ, are investigated by molecular dynamics simulation in the temperature range T=250–2000 K and at an external pressure of p=1.0 bar. It is shown that the liquid–glass transition is accompanied by a considerable increase in the shear modulus G and the Young’s modulus E (by more than 50%). The temperature dependence of the Poisson’s ratio exhibits a sharp fall from typical values for metals of approximately 0.32–0.33 to low values (close to zero), which are characteristic for brittle bulk metallic glasses. Non-monotonic temperature dependence of the longitudinal and transverse sound velocity near the liquid-glass transition is also observed. The glass forming ability of the alloy is evaluated in terms of the fragility index m. Its value is m≈64 for the Zr50Cu40Ag10 metallic glass, which is in a good agreement with the experimental data for the Zr-based metallic glasses.

Peculiarities in the temperature dependence of electrical resistivity of metallic glasses

1979 ◽  
Vol 52 (2) ◽  
pp. 387-396 ◽  
Author(s):  
J. Krempaský ◽  
J. Vajda ◽  
A. Zentko ◽  
P. Duhaj
Keyword(s):  
Electrical Resistivity ◽  
Temperature Dependence ◽  
Metallic Glasses

Hydrogen-induced changes in temperature dependence of the resistivity in ZrFe metallic glasses

1995 ◽  
Vol 94 (3) ◽  
pp. 217-220 ◽  
Author(s):  
I. Kokanović ◽  
B. Leontić ◽  
J. Lukatela ◽  
S. Rešetić ◽  
Er. Girt
Keyword(s):  
Temperature Dependence ◽  
Metallic Glasses ◽  
Induced Changes

Temperature dependence of the electrical resistivity in [Co1−x(Fe0.5Ni0.5)x]75Si15B10 metallic glasses

1987 ◽  
Vol 99 (1) ◽  
pp. 243-249 ◽  
Author(s):  
J. M. Barandiarán ◽  
J. C. Gómez-Sal ◽  
J. Rodríguez Fernández ◽  
R. J. López Sánchez ◽  
O. V. Nielsen
Keyword(s):  
Electrical Resistivity ◽  
Temperature Dependence ◽  
Metallic Glasses

Calculation of the Temperature Dependence of the Unrelaxed Shear Modulus of High-Entropy Bulk Metallic Glasses from Calorimetric Data

JETP Letters ◽  
2020 ◽  
Vol 111 (10) ◽  
pp. 586-590
Author(s):  
A. S. Makarov ◽  
E. V. Goncharova ◽  
G. V. Afonin ◽  
J. C. Qiao ◽  
N. P. Kobelev ◽  
...  
Keyword(s):  
Shear Modulus ◽  
Temperature Dependence ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Calorimetric Data ◽  
High Entropy
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