Результаты исследований: Научные публикации в периодических изданиях › статья
Cooperative grain boundary sliding and nanograin nucleation process in nanocrystalline, ultrafine-grained, and polycrystalline solids. / Bobylev, S. V.; Morozov, N. F.; Ovid’ko, I. A.
в: Physical Review B - Condensed Matter and Materials Physics, Том B 84, № 094103, 2011, стр. 1-10.Результаты исследований: Научные публикации в периодических изданиях › статья
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TY - JOUR
T1 - Cooperative grain boundary sliding and nanograin nucleation process in nanocrystalline, ultrafine-grained, and polycrystalline solids
AU - Bobylev, S. V.
AU - Morozov, N. F.
AU - Ovid’ko, I. A.
PY - 2011
Y1 - 2011
N2 - A special physical mode of plastic deformation in nanocrystalline, ultrafine-grained, and polycrystalline solids is suggested and theoretically described. The mode represents the cooperative grain boundary (GB) sliding and nanoscale grain nucleation (occurring through stress-driven splitting and migration of GBs) process. It is theoretically revealed that, in certain ranges of parameters of the defect structure under consideration, the special deformation mode is more energetically favorable than both “pure” GB sliding and the previously examined [ Bobylev et al. Phys. Rev. Lett. 105 055504 (2010)] cooperative GB sliding and migration process. In addition, the special deformation mode enhances ductility of nanocrystalline and ultrafine-grained solids, and this enhancing effect is more pronounced compared to that of the cooperative GB sliding and migration process.
AB - A special physical mode of plastic deformation in nanocrystalline, ultrafine-grained, and polycrystalline solids is suggested and theoretically described. The mode represents the cooperative grain boundary (GB) sliding and nanoscale grain nucleation (occurring through stress-driven splitting and migration of GBs) process. It is theoretically revealed that, in certain ranges of parameters of the defect structure under consideration, the special deformation mode is more energetically favorable than both “pure” GB sliding and the previously examined [ Bobylev et al. Phys. Rev. Lett. 105 055504 (2010)] cooperative GB sliding and migration process. In addition, the special deformation mode enhances ductility of nanocrystalline and ultrafine-grained solids, and this enhancing effect is more pronounced compared to that of the cooperative GB sliding and migration process.
KW - нанозерна
U2 - http://dx.doi.org/10.1103/PhysRevB.84.094103
DO - http://dx.doi.org/10.1103/PhysRevB.84.094103
M3 - Article
VL - B 84
SP - 1
EP - 10
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 094103
ER -
ID: 5200922