Influence of a Constant Magnetic Field on the Parameters of the Magnetoplastic Effect in Aluminum Alloy B95pch

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Abstract

The present work is devoted to the comprehensive experimental study of the magnetoplastic effect found in the aluminum alloy B95pch aged in a weak constant magnetic field. The data on chemical composition of aluminum alloy B95pch, modes of thermal and thermomagnetic treatments and main experimentally observed regularities of changes in values of microhardness, modulus of elasticity of separate local areas and phase composition of aluminum alloy B95pch, aged at temperature 140°С, time from 2 to 8 h, in a constant magnetic field with intensity 557.0 kA/m and in its absence are presented. It was found that the constant magnetic field significantly affects the strength properties and structure of aluminum alloy B95pch. The negative magnetoplastic effect has been detected, the value of which is 21%. It is observed that the constant magnetic field does not significantly affect the average grain size, however, the size and number of observed foreign inclusions within the grain become significantly smaller compared to aging in the absence of magnetic field. In addition, the imposition of the constant magnetic field on the phase formation process leads to the formation of a more distorted structure: the half-width of diffraction lines becomes wider. The results of microhardness and modulus of elasticity measurements of aluminum alloy B95pc were found to be correlated.

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J. V. Osinskaya

Samara National Research University

Author for correspondence.
Email: ojv76@mail.ru
Russian Federation, Samara

S. V. Voronin

Samara National Research University

Email: ojv76@mail.ru
Russian Federation, Samara

S. R. Makeev

Samara National Research University

Email: ojv76@mail.ru
Russian Federation, Samara

I. I. Levin

Samara National Research University

Email: ojv76@mail.ru
Russian Federation, Samara

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Supplementary files

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2. Fig. 1. Results of metallographic study of B95pc alloy: quenched at 470°C (1 h) in 20°C water (a); aged for 2 (b, c), 4 (d, e) 6 (f, g) and 8 h (h, i) at magnetic field strengths of 0 (b, d, e, h) and 557.0 kA/m (c, d, g, i)

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3. Fig. 2. Dependence of microhardness of aluminum alloy B95pch on aging time in the absence of magnetic field (1) and at magnetic field strength of 557.0 kA/m (2)

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4. Fig. 3. Diffractograms obtained from B95pc aluminum alloy quenched at 470°C (1 h) in 20°C water (a); aged for 2 h at magnetic field strengths of 0 (b) and 557.0 kA/m (c). The indices of reflections related to the α-Al phase are marked

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5. Fig. 4. Optical image of the surface of the metallographic slip (a, b) and the results of scanning probe microscopy (c, d) of the sample of aluminum alloy B95pch aged for 2 h at magnetic field strength 0 (a, c) and 557.0 kA/m (b, d)

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