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Physics of Metals and Metallography

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01.12.2023 | STRUCTURE, PHASE TRANSFORMATIONS, AND DIFFUSION

Effect of Pressure and Gravitational Field on the Distribution of Cu during Directed Growth of a Single Crystal of an Al–0.005 wt % Cu Alloy

verfasst von: V. O. Esin, A. S. Krivonosova, I. Zh. Sattybaev, T. G. Fedorova, L. V. Elokhina

Erschienen in: Physics of Metals and Metallography | Ausgabe 12/2023

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Abstract

The distribution of the copper concentration in the α-solid solution of Al and the dislocation density in single crystals of the Al–0.005 wt % Cu alloy grown from the melt at various values of argon pressure (Ar) and the gravitational field component (g_mg) directed along the surface of the crystallization front were determined using the methods of quantitative X-ray spectral analysis and metallography. A strong inhomogeneity in the copper concentration measured in adjacent areas of the cross-sectional surface of the crystal and its correlation with the inhomogeneity of the distribution of dislocations in single crystals of the alloy, which depends on pressure and the gravitational field component, were discovered. The relaxation mechanism of the excess free volume of the phase transformation that is released in the region of the interphase boundary during crystal growth is considered.

Vorheriger Artikel Determination of the Boundaries of the Metastable ω-Phase Region in Titanium and Zirconium Alloys

Nächster Artikel Formation of a Layered Dissipative Structure during Directed Growth of a MgB2 Crystal from a Melt

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Titel: Effect of Pressure and Gravitational Field on the Distribution of Cu during Directed Growth of a Single Crystal of an Al–0.005 wt % Cu Alloy
verfasst von: V. O. Esin
A. S. Krivonosova
I. Zh. Sattybaev
T. G. Fedorova
L. V. Elokhina
Publikationsdatum: 01.12.2023
Verlag: Pleiades Publishing
Erschienen in: Physics of Metals and Metallography / Ausgabe 12/2023
Print ISSN: 0031-918X
Elektronische ISSN: 1555-6190
DOI: https://doi.org/10.1134/S0031918X23602457

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