Вестник Нижегородского университета им. Н.И. Лобачевского. Серия: Социальные науки

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Title of Article

EFFECT OF GRAIN BOUNDARY DIFFUSION ACCELERATION DURING SUPERPLASTIC DEFORMATION OF NANO- AND MICROCRYSTALLINE MATERIALS

Issue	5
Date	2010

Article type	scientific article	UDC	539.4; 669.3
Pages	167-170	Keywords	superplasticity, nonequilibrium grain boundaries, nano- and microcrystalline (NMC) metals and alloys, diffusion

Authors

Sakharov Nikita VladimirovichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Chuvildeev Vladimir NikolaevichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Gryaznov Mikhail YurevichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo, Nizhegorodskiy filial Instituta mashinovedeniya im. A.A. Blagonravova RAN
Nokhrin Aleksey VladimirovichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Kopylov Vladimir IlichFiziko-tekhnicheskiy institut Natsionalnoy akademii nauk Belarusi, Minsk
Pirozhnikova Olga EduardovnaNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo, Nizhegorodskiy filial Instituta mashinovedeniya im. A.A. Blagonravova RAN
Lopatin Yuriy GennadevichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Melekhin Nikolay VladimirovichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo

Abstract

The effect of grain boundary diffusion acceleration during superplastic deformation of nano- and microcrystalline (NMC) materials produced by severe plastic deformation (SPD) is described. The grain boundary diffusion coefficient for NMC materials at superplastic deformation conditions has been found to depend on the intragrain deformation rate. Numerical calculation results have been compared with experimental data.

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