Deformation of nanocrystalline binary aluminum alloys with segregation of Mg, Co and Ti at grain boundaries
作者： A. V. Zinovev , M. G. Bapanina , R. I. Babicheva , N. A. Enikeev , S. V. Dmitriev
DOI: 10.1134/S0031918X16110144
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摘要: The influence of the temperature and sort alloying element on deformation nanocrystalline (NC) binary Al alloys with segregation 10.2 at % Ti, Co, or Mg over grain boundaries has been studied using molecular dynamics. behavior materials in detail by simulation shear various bicrystals grain-boundary impurity atoms, namely, Mg. different orientation studied. It found that Co introduction into NC a strengthening effect due to deceleration migration (GBM) difficulty sliding (GBS). greatly impedes GBM, but stimulates development GBS. In alloy Al–Ti, GBM occurs actively, flow-stress values are close characteristic pure Al.
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