Effect of Copper on the Formation of L12 Intermetallic Phases in Al–Cu–X (X = Ti, Zr, Hf) Alloys
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Effect of Copper on the Formation of L12 Intermetallic Phases in Al–Cu–X (X = Ti, Zr, Hf) Alloys
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| Автор |
Popova, E.
Kotenkov, P. Gilev, I. Pryanichnikov, S. Shubin, A. |
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| Тематика |
DEGREE OF SUPERSATURATION
METASTABLE ALUMINIDES SHAPE OF INTERMETALLIC PARTICLES STRUCTURE STABILIZATION TYPE OF LATTICE STRUCTURE |
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| Описание |
Transition metal trialuminides of the Al3X type of groups 4 and 5 of the periodic system have reduced density, high melting points, and corrosion resistance. Aluminides with a cubic lattice of the Al3Sc type can be used as a nucleating phase for aluminum alloys. However, low plasticity and a tetragonal lattice limit their application. In this work, we stabilized the metastable cubic lattice of Al3X-type aluminides by replacing aluminum with copper. The conditions for the formation of L12 metastable aluminides in the Al–Cu–TM (TM: Ti, Zr, Hf) alloys were studied using a wide range of copper concentrations. A high concentration of copper (hypereutectic alloys) is the one of the necessary conditions for the formation of (Al1−xCux)3Ti, (Al1−xCux)3Zr, (Al1−xCux)3Hf aluminides. With an increase in the copper concentration, the number of metastable aluminides sharply increased. The process of their formation strongly depended on the sequence of dissolution of the corresponding components in the melts. The low volume fraction of precipitated titanium aluminides was the result of insufficient supersaturation of α-Al with titanium (at the peritectic temperature) compared to that for alloys with zirconium and hafnium. Under identical synthesis conditions in the crystal lattice of metastable aluminides formed in experimental Al–Cu–Ti, Al–Cu–Zr, Al–Cu–Hf alloys, copper was found to substitute up to 8, 10, and 13 at.% of aluminum, respectively. The crystallographic and dimensional similarities of the lattices in metastable transition metal aluminides and in α-Al suggest their usefulness as modifying additions in aluminum-based alloys. © 2022 by the authors.
Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences This study was performed in terms of a state task of the Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, using equipment of the Center for Collective Use «Ural-M». |
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| Дата |
2024-04-08T11:06:24Z
2024-04-08T11:06:24Z 2022 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Popova, E, Kotenkov, P, Gilev, I, Pryanichnikov, S & Shubin, A 2022, 'Effect of Copper on the Formation of L12 Intermetallic Phases in Al–Cu–X (X = Ti, Zr, Hf) Alloys', Metals, Том. 12, № 12, 2067. https://doi.org/10.3390/met12122067
Popova, E., Kotenkov, P., Gilev, I., Pryanichnikov, S., & Shubin, A. (2022). Effect of Copper on the Formation of L12 Intermetallic Phases in Al–Cu–X (X = Ti, Zr, Hf) Alloys. Metals, 12(12), [2067]. https://doi.org/10.3390/met12122067 2075-4701 Final All Open Access; Gold Open Access https://www.mdpi.com/2075-4701/12/12/2067/pdf?version=1669972907 https://www.mdpi.com/2075-4701/12/12/2067/pdf?version=1669972907 http://elar.urfu.ru/handle/10995/131308 10.3390/met12122067 85144981043 000904125700001 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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| Формат |
application/pdf
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| Издатель |
MDPI
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| Источник |
Metals
Metals |
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