Результаты исследований: Научные публикации в периодических изданиях › Обзор литературы
Superior strength in ultrafine-grained materials produced by SPD processing. / Valiev, R.Z.
в: Materials Transactions, Том 55, № 1, 2014, стр. 13-18.Результаты исследований: Научные публикации в периодических изданиях › Обзор литературы
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TY - JOUR
T1 - Superior strength in ultrafine-grained materials produced by SPD processing.
AU - Valiev, R.Z.
PY - 2014
Y1 - 2014
N2 - Recent studies demonstrated that the processing of metallic alloys by severe plastic deformation (SPD) can result in not only strong grain refinement but also leads to the formation of grain boundaries (GBs) with different structures, including GB segregations and precipitations. These nanostructural features of SPD-processed alloys produce considerable influence on their mechanical properties. The paper presents experimental data demonstrating a superstrength and positive slope of the HallPetch relation when passing from micro- to nanostructured state in a number of metallic materials subjected to severe plastic deformation. The nature of the superior strength is associated with new strengthening mechanisms and the difficulty of generation of dislocations from grain boundaries with segregations. This new approach is used for achieving the enhanced strength in several commercial Al and Ti alloys as well as steels subjected to SPD processing. © 2013 The Japan Institute of Metals and Materials.
AB - Recent studies demonstrated that the processing of metallic alloys by severe plastic deformation (SPD) can result in not only strong grain refinement but also leads to the formation of grain boundaries (GBs) with different structures, including GB segregations and precipitations. These nanostructural features of SPD-processed alloys produce considerable influence on their mechanical properties. The paper presents experimental data demonstrating a superstrength and positive slope of the HallPetch relation when passing from micro- to nanostructured state in a number of metallic materials subjected to severe plastic deformation. The nature of the superior strength is associated with new strengthening mechanisms and the difficulty of generation of dislocations from grain boundaries with segregations. This new approach is used for achieving the enhanced strength in several commercial Al and Ti alloys as well as steels subjected to SPD processing. © 2013 The Japan Institute of Metals and Materials.
U2 - 10.2320/matertrans.MA201325
DO - 10.2320/matertrans.MA201325
M3 - Literature review
VL - 55
SP - 13
EP - 18
JO - Materials Transactions
JF - Materials Transactions
SN - 0916-1821
IS - 1
ER -
ID: 7037598