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Investigation of structure, rheological and relaxation properties, and stress relaxation kinetics in nanocrystalline beryllium at hot rolling temperatures

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Abstract

Rheological and relaxation properties of high-purity nanocrystalline beryllium are obtained at hot rolling temperatures. It is shown that full stress relaxation in nanocrystalline beryllium occurs only upon deformation. A pause between deformations caused by repeated compressions does not affect the stress-strain curve or the final grain size. It is established that initially nanocrystalline beryllium (with grain sizes of 30–40 nm) converts into fine-crystalline one (with grain sizes of 5–6 μm) after hot plastic deformation at T = 700–800°C. The results are necessary for the creation of nondestructive technology to produce the thinnest foil from nanocrystalline beryllium.

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Correspondence to N. G. Kolbasnikov.

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Original Russian Text © N.G. Kolbasnikov, V.V. Mishin, A.I. Shamshurin, A.V. Zabrodin, 2014, published in Rossiiskie Nanotekhnologii, 2014, Vol. 9, Nos. 1–2.

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Kolbasnikov, N.G., Mishin, V.V., Shamshurin, A.I. et al. Investigation of structure, rheological and relaxation properties, and stress relaxation kinetics in nanocrystalline beryllium at hot rolling temperatures. Nanotechnol Russia 9, 65–72 (2014). https://doi.org/10.1134/S1995078014010078

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  • DOI: https://doi.org/10.1134/S1995078014010078

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