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Fabrication of an in situ Al−Nb Metal Matrix Composite by Constrained Shear Strain and Its Emission Efficiency in a Glow Discharge

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Abstract

Constrained shear strain with subsequent annealing was used to fabricate an in situ Al−Nb metal matrix composite with the fraction of an Al3Nb intermetallic phase of 25 at %. The composite microstructure was studied. The emission efficiency of the Al−Nb composite samples in a glow discharge was determined, along with those of aluminum and niobium as cold cathodes. The difference in the glow current was analyzed by fixed voltages at cathodes made of the studied materials.

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ACKNOWLEDGMENTS

Scanning electron microscopy studies were performed using the facilities of the Structural and Physical Mechanical Studies of Materials Center for Collective Use at the Institute for Metals Superplasticity Problems of the Russian Academy of Sciences.

Funding

This work was supported by the Russian Science Foundation (project no. 18-12-00440) and partially supported by a state order to the Institute for Metals Superplasticity Problems of the Russian Academy of Sciences.

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Authors and Affiliations

  1. Institute for Metals Superplasticity Problems, Russian Academy of Sciences, 450001, Ufa, Russia

    R. Kh. Khisamov, G. F. Korznikova, G. R. Khalikova, S. N. Sergeev, K. S. Nazarov, R. U. Shayachmetov & R. R. Mulyukov

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  1. R. Kh. Khisamov
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  2. G. F. Korznikova
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  3. G. R. Khalikova
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  4. S. N. Sergeev
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  5. K. S. Nazarov
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  6. R. U. Shayachmetov
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  7. R. R. Mulyukov
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Corresponding author

Correspondence to R. Kh. Khisamov.

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The authors declare that they have no conflict of interest.

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Translated by N. Podymova

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Khisamov, R.K., Korznikova, G.F., Khalikova, G.R. et al. Fabrication of an in situ Al−Nb Metal Matrix Composite by Constrained Shear Strain and Its Emission Efficiency in a Glow Discharge. Tech. Phys. Lett. 46, 1200–1202 (2020). https://doi.org/10.1134/S1063785020120093

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