Maximum yield strength under quasi-static and high-rate plastic deformation of metals

E.N. Borodin, A.E. Mayer, Y.V. Petrov, A.A. Gruzdkov

Результат исследований: Научные публикации в периодических изданияхстатья

13 Цитирования (Scopus)

Выдержка

© 2014, Pleiades Publishing, Ltd. The dependence of the yield strength of metals on the grain size and initial dislocation density in a wide range of strain rates has been analyzed within a unified approach. It has been shown that the barrier stress and characteristic time of plastic relaxation completely determine the shear strength of metals for all strain rates. The existence of alternative (to dislocation glide) mechanisms of plastic deformation in the material, limits the increase in the yield strength with increasing strain rate and leads to the appearance of a maximum in the dependence of the yield strength on the grain size. It has been found that, at extremely high strain rates, the maximum yield strength corresponds to grain sizes of the order of several hundred nanometers. This has been explained by the dislocation starvation effect of the material.
Язык оригиналаанглийский
Страницы (с-по)2470-2479
ЖурналPhysics of the Solid State
Номер выпуска12
DOI
СостояниеОпубликовано - 2014

Отпечаток

yield strength
plastic deformation
strain rate
Yield stress
Strain rate
Plastic deformation
Metals
grain size
metals
shear strength
Shear strength
plastics
Plastics

Цитировать

Borodin, E.N. ; Mayer, A.E. ; Petrov, Y.V. ; Gruzdkov, A.A. / Maximum yield strength under quasi-static and high-rate plastic deformation of metals. В: Physics of the Solid State. 2014 ; № 12. стр. 2470-2479.
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Maximum yield strength under quasi-static and high-rate plastic deformation of metals. / Borodin, E.N.; Mayer, A.E.; Petrov, Y.V.; Gruzdkov, A.A.

В: Physics of the Solid State, № 12, 2014, стр. 2470-2479.

Результат исследований: Научные публикации в периодических изданияхстатья

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