TY - JOUR
T1 - Deformation of Nanocrystalline Binary Aluminum Alloys with Segregation of Mg, Co and Ti at Grain Boundaries
AU - Zinovev, Aleksandr
AU - Bapanina, M.G.
AU - Babicheva, R.I.
AU - Enikeev, N.A.
AU - Dmitriev, S.
AU - Zhou, D.
N1 - Score=10
PY - 2017/1/13
Y1 - 2017/1/13
N2 - The influence of the temperature and sort of alloying element on the deformation of the nanocrystalline
(NC) binary Al alloys with segregation of 10.2 at % Ti, Co, or Mg over grain boundaries has been studied
using the molecular dynamics. The deformation behavior of the materials has been studied in detail by the
simulation of the shear deformation of various Al bicrystals with the grain-boundary segregation of impurity
atoms, namely, Ti, Co, or Mg. The deformation of bicrystals with different grain orientation has been studied.
It has been found that Co introduction into grain boundaries of NC Al has a strengthening effect due to the
deceleration of the grain-boundary migration (GBM) and difficulty in the grain-boundary sliding (GBS).
The Mg segregation at the boundaries greatly impedes the GBM, but stimulates the development of the GBS.
In the NC alloy of Al–Ti, the GBM occurs actively, and the flow-stress values are close to the values characteristic
of pure Al.
AB - The influence of the temperature and sort of alloying element on the deformation of the nanocrystalline
(NC) binary Al alloys with segregation of 10.2 at % Ti, Co, or Mg over grain boundaries has been studied
using the molecular dynamics. The deformation behavior of the materials has been studied in detail by the
simulation of the shear deformation of various Al bicrystals with the grain-boundary segregation of impurity
atoms, namely, Ti, Co, or Mg. The deformation of bicrystals with different grain orientation has been studied.
It has been found that Co introduction into grain boundaries of NC Al has a strengthening effect due to the
deceleration of the grain-boundary migration (GBM) and difficulty in the grain-boundary sliding (GBS).
The Mg segregation at the boundaries greatly impedes the GBM, but stimulates the development of the GBS.
In the NC alloy of Al–Ti, the GBM occurs actively, and the flow-stress values are close to the values characteristic
of pure Al.
KW - molecular dynamics
KW - aluminum alloys
KW - segregation
KW - grain-boundary sliding
KW - grain-boundary migration
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/33023114
U2 - 10.1134/S0031918X16110144
DO - 10.1134/S0031918X16110144
M3 - Article
SN - 0031-918X
VL - 118
SP - 65
EP - 74
JO - Physics of Metals and Metallography
JF - Physics of Metals and Metallography
IS - 1
ER -