The Influence of Weak Magnetic Fields on the Mechanical Properties of Beryllium
E. I. Kurek, I. G. Kurek, A. V. Oliynych-Lysyuk, M. D. Rarans’ky
Yuriy Fedkovych Chernivtsi National University, 2 Kotsyubynsky Str., UA-58012 Chernivtsi, Ukraine
Received: 26.08.2015. Download: PDF
The behaviour of elastic and inelastic properties of magnesium-thermal beryllium condensate (MTC) before, during, and after the action of weak permanent magnetic fields on this condensate is investigated. The amplitude, temperature, and time dependences of the effective shear modulus, low-frequency internal friction, and the ratios of motion rates of dislocations are analysed. The direct and reverse magnetoplastic effects and ‘magnetic memory’ effects are revealed. The nature of these effects is analysed from the positions of changing of the type of dislocations motion from hysteresis motion to viscous motion, occurrence of structural and phase transformations of the martensitic type with the formation of incommensurate phases and appearance and healing of microcracks at the stage of elastic deformation of beryllium.
Key words: beryllium, direct and reverse magnetoplastic effects, ‘magnetic memory’, ratios of motion rates of dislocations, martensitic phase transformations, incommensurate phase, microcracks.
PACS: 61.72.Hh, 62.20.de, 62.40.+i, 75.20.En, 75.60.Lr, 75.80.+q, 83.60.Np
Citation: E. I. Kurek, I. G. Kurek, A. V. Oliynych-Lysyuk, and M. D. Rarans’ky, The Influence of Weak Magnetic Fields on the Mechanical Properties of Beryllium, Metallofiz. Noveishie Tekhnol., 37, No. 11: 1517—1525 (2015) (in Ukrainian)