THE INFLUENCE OF COBALT ON DENSITY AND ELECTRICAL RESISTIVITY OF Al–Ni–Co–Ce ALLOYS IN CRYSTALLINE AND LIQUID STATES

B. A. Rusanov; Русанов Б. А.; V. E. Sidorov; Сидоров В. Е.; E. V. Sterkhov; Стерхов Е. В.; S. A. Petrova; Петрова С. А.; A. I. Rusanova; Русанова А. И.; A. A. Sabirzyanov; Сабирзянов А. А.; E. E. Sidorova; Сидорова Е. Е.

doi:10.31857/S0235010623040072

THE INFLUENCE OF COBALT ON DENSITY AND ELECTRICAL RESISTIVITY OF Al–Ni–Co–Ce ALLOYS IN CRYSTALLINE AND LIQUID STATES

Authors: Rusanov B.A.¹, Sidorov V.E.¹^,2, Sterkhov E.V.³, Petrova S.A.²^,3, Rusanova A.I.³, Sabirzyanov A.A.⁴, Sidorova E.E.⁵
Affiliations:
1. Ural State Pedagogical University
2. Ural Federal University
3. Institute of Metallurgy UB RAS
4. Ural State University of Railway Transport
5. Plekhanov Russian University of Economics
Issue: No 4 (2023)
Pages: 426-436
Section: Articles
URL: https://rjsvd.com/0235-0106/article/view/661287
DOI: https://doi.org/10.31857/S0235010623040072
EDN: https://elibrary.ru/XETTQJ
ID: 661287

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Abstract

In this work were studied density (by gamma-absorption method) and electrical resistivity (by contactless method in rotating magnetic field) of Al–Ni–Co–Ce glass-forming alloys with different ratios of transition metals. It was found the existence of a wide two-phase zone was established and jump-like changes in properties at solidus and liquidus temperatures. Increasing of cobalt content from 2 to 4 at % leads to 2% decrease of density and 3% increase of electrical resistivity in crystalline and liquid states. Temperature coefficients of change in properties were calculated. Density hysteresis was detected, which occurs when melts are overheated above 1350 K. This fact is related to the disintegration of large-scale microheterogeneities that exist in melts during heating. It is shown that these results can be used to optimize the process of obtaining rapidly hardened alloys.

Keywords

aluminum alloys, aluminum, transition metals, cerium, density, electrical resistivity

References

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