Abstract
X-ray amorphous ribbons of aluminum-based alloys doped with transition (Ni, Fe) and rare earth (La) metals in various ratios were obtained by melt spinning. The mechanical characteristics and fracture surfaces of the ribbons under conditions of uniaxial tension with speeds from 0.01 to 10 mm/min were studied. It was shown that, with an increase in the rate in all investigated alloys, the strength limit increases and low plasticity remains. Inhomogeneous deformation is realized by the initiation and spread of shear bands. The mixed fracture surface indicates a brittle-viscous fracture with a high ratio of the viscous component. A significant influence of the scale factor on the strength characteristics of the ribbons was confirmed. The tensile strength of the ribbons increases with rising iron content and decreasing nickel content when the influence of the scale factor is excluded. It is experimentally shown on ribbons with a low-melting tin coating that local heating in shear bands reaches the melting point of tin of 231.9°C.
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This work has been carried out in accordance with the state order no. 075-00947-20-00.
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Translated by Sh. Galyaltdinov
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Bakhteeva, N.D., Todorova, E.V., Prosvirnin, D.V. et al. Low-Temperature Deformation of Al–Ni–Fe–La System Amorphous Alloys. Inorg. Mater. Appl. Res. 12, 509–516 (2021). https://doi.org/10.1134/S2075113321020076
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DOI: https://doi.org/10.1134/S2075113321020076