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Erschienen in: Metal Science and Heat Treatment 7-8/2023

20.12.2023 | ADDITIVE TECHNOLOGIES, POWDER AND COMPOSITE MATERIALS

Structure and Phase Composition of Heat Treated Al – Zr Bimetal

verfasst von: Yu. Yu. Emurlaeva, M. N. Khomyakov, N. S. Aleksandrova, K. I. Emurlaev, I. A. Bataev

Erschienen in: Metal Science and Heat Treatment | Ausgabe 7-8/2023

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Abstract

Special features of structural and phase transformations occurring in annealing of an explosion-welded Al – Zr bimetal are considered. It is shown that heat treatment causes formation and growth of an intermetallic layer on the interface, which has a hardness of 9 GPa. The methods of microscopic x-ray spectrum analysis and of phase analysis with the use of synchrotron radiation are used to show that the intermetallic layer is represented by a ZrAl3 phase with a D023-type structure. The lattice constants of this phase vary gradually from the metal-intermetallic interfaces to the center of the layer. Quantum-chemical modeling by the method of density functional is used to show that the zirconium trialuminide is in the steadiest state at a certain distance from the interface due to the process of secondary recrystallization and the accompanying annihilation of crystal structure defects.

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Metadaten
Titel
Structure and Phase Composition of Heat Treated Al – Zr Bimetal
verfasst von
Yu. Yu. Emurlaeva
M. N. Khomyakov
N. S. Aleksandrova
K. I. Emurlaev
I. A. Bataev
Publikationsdatum
20.12.2023
Verlag
Springer US
Erschienen in
Metal Science and Heat Treatment / Ausgabe 7-8/2023
Print ISSN: 0026-0673
Elektronische ISSN: 1573-8973
DOI
https://doi.org/10.1007/s11041-023-00952-9

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