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- W4205558879 abstract "The stabilization of grain boundaries (GBs) is beneficial for improving the stability and mechanical properties of nanocrystalline (NC) metals. Molecular dynamics (MD) calculations were performed to investigate the shear response of Ni [Formula: see text]17 [110](223) symmetrical tilt GB. It was found that under the action of shear, the nucleation and evolution of the GB source Shockley partial dislocations ultimately result in the low-energy-state transformation of the GB structure units (SUs). However, the Ag atom contained in the GB increases the shear stress and strain required for the GB relaxation, and the strain range for the GB relaxation is expanded, indicating the inhibitory effect of the Ag atom on the structural relaxation of Ni [Formula: see text]17 [110](223) GB. As the temperature increases from 10 K to 250 K, the structural relaxation of Ni [Formula: see text]17 [110](223) GB becomes easier to proceed. In addition to segregation-induced GB stabilization, strain-induced GB relaxation and the roles of foreign atom and temperature clarified in this work could provide several new entry points for stabilizing high-energy GBs." @default.
- W4205558879 created "2022-01-25" @default.
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- W4205558879 date "2022-01-04" @default.
- W4205558879 modified "2023-09-27" @default.
- W4205558879 title "Shear strain-induced structure relaxation of Ni Σ17 [110](223) grain boundary: A molecular dynamics simulation" @default.
- W4205558879 doi "https://doi.org/10.1142/s0217984921504017" @default.
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