Deformation defects and electron irradiation effect in nanostructured Al-Mg alloy processed by severe plastic deformation. / Liu, Man Ping; Sun, Shao Chun; Roven, Hans J.; Yu, Ying Da; Zhang, Zhen; Murashkin, Maxim; Valiev, Ruslan Z.
In: Transactions of Nonferrous Metals Society of China (English Edition), Vol. 22, No. 8, 01.01.2012, p. 1810-1816.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Deformation defects and electron irradiation effect in nanostructured Al-Mg alloy processed by severe plastic deformation
AU - Liu, Man Ping
AU - Sun, Shao Chun
AU - Roven, Hans J.
AU - Yu, Ying Da
AU - Zhang, Zhen
AU - Murashkin, Maxim
AU - Valiev, Ruslan Z.
PY - 2012/1/1
Y1 - 2012/1/1
N2 - In order to explore the exact nature of deformation defects previously observed in nanostructured Al-Mg alloys subjected to severe plastic deformation, a more thorough examination of the radiation effect on the formation of the planar defects in the high pressure torsion (HPT) alloys was conducted using high-resolution transmission electron microscopy (HRTEM). The results show that high density defects in the HRTEM images disappear completely when these images are exposed under the electron beam for some duration of time. At the same time, lattice defects are never observed within no-defect areas even when the beam-exposure increases to the degree that holes appear in the areas. Therefore, it is confirmed that the planar defects observed in the HPT alloys mainly result from the significant plastic deformation and are not due to the radiation effect during HRTEM observation.
AB - In order to explore the exact nature of deformation defects previously observed in nanostructured Al-Mg alloys subjected to severe plastic deformation, a more thorough examination of the radiation effect on the formation of the planar defects in the high pressure torsion (HPT) alloys was conducted using high-resolution transmission electron microscopy (HRTEM). The results show that high density defects in the HRTEM images disappear completely when these images are exposed under the electron beam for some duration of time. At the same time, lattice defects are never observed within no-defect areas even when the beam-exposure increases to the degree that holes appear in the areas. Therefore, it is confirmed that the planar defects observed in the HPT alloys mainly result from the significant plastic deformation and are not due to the radiation effect during HRTEM observation.
KW - Al-Mg alloy
KW - Deformation defects
KW - Electron irradiation
KW - High pressure torsion
KW - Severe plastic deformation
KW - Transmission electron microscopy
UR - http://www.scopus.com/inward/record.url?scp=84866114523&partnerID=8YFLogxK
U2 - 10.1016/S1003-6326(11)61391-5
DO - 10.1016/S1003-6326(11)61391-5
M3 - Article
AN - SCOPUS:84866114523
VL - 22
SP - 1810
EP - 1816
JO - Transactions of Nonferrous Metals Society of China
JF - Transactions of Nonferrous Metals Society of China
SN - 1003-6326
IS - 8
ER -
ID: 35165613