Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Effect of annealing on the microstructure and mechanical properties of ultrafine-grained commercially pure Al. / Mavlyutov, A. M.; Latynina, T. A.; Murashkin, M. Yu; Valiev, R. Z.; Orlova, T. S.
в: Physics of the Solid State, Том 59, № 10, 01.10.2017, стр. 1970-1977.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Effect of annealing on the microstructure and mechanical properties of ultrafine-grained commercially pure Al
AU - Mavlyutov, A. M.
AU - Latynina, T. A.
AU - Murashkin, M. Yu
AU - Valiev, R. Z.
AU - Orlova, T. S.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - The influence of annealing on the microstructure and mechanical properties of ultrafine-grained (UFG) commercially pure aluminum preliminarily subjected to severe plastic deformation by high pressure torsion has been studied. It is found that annealing of the UFG samples in the temperature range 363–473 K for 1 h leads to increases in the conventional yield strength and ultimate tensile strength, which attained maximum values (50 and 30%, respectively) after annealing at 423 K. A key role of nonequilibrium high-angle grain boundaries in the strengthening effect of UFG-Al due to annealing is discussed. The increase in the strength of UFG-Al is accompanied by a significant decrease in its ductility. A new approach of increasing the ductility of UFG-Al with retaining a high strength is proposed. It is an introduction of additional dislocation density to a UFG structure relaxed by annealing.
AB - The influence of annealing on the microstructure and mechanical properties of ultrafine-grained (UFG) commercially pure aluminum preliminarily subjected to severe plastic deformation by high pressure torsion has been studied. It is found that annealing of the UFG samples in the temperature range 363–473 K for 1 h leads to increases in the conventional yield strength and ultimate tensile strength, which attained maximum values (50 and 30%, respectively) after annealing at 423 K. A key role of nonequilibrium high-angle grain boundaries in the strengthening effect of UFG-Al due to annealing is discussed. The increase in the strength of UFG-Al is accompanied by a significant decrease in its ductility. A new approach of increasing the ductility of UFG-Al with retaining a high strength is proposed. It is an introduction of additional dislocation density to a UFG structure relaxed by annealing.
UR - http://www.scopus.com/inward/record.url?scp=85031786036&partnerID=8YFLogxK
U2 - 10.1134/S1063783417100274
DO - 10.1134/S1063783417100274
M3 - Article
AN - SCOPUS:85031786036
VL - 59
SP - 1970
EP - 1977
JO - Physics of the Solid State
JF - Physics of the Solid State
SN - 1063-7834
IS - 10
ER -
ID: 35172852