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- W2156504785 endingPage "1163" @default.
- W2156504785 startingPage "1149" @default.
- W2156504785 abstract "Dislocations mobility and stability in the carbon nanotubes (CNTs)-reinforced metal matrix nanocomposites (MMNCs) can significantly affect the mechanical properties of the composites. However, current processing techniques often lead to the formation of coated CNT (amorphous interphase exists between the reinforcement and metal matrix), which have large impact upon the image force exerting on dislocations. Even though the importance of the interphase zone formed in metal matrix composites has been demonstrated by many studies for elastic properties, the influence of interphase on the local elastoplastic behavior of CNT-reinforced MMNCs is still an open issue. This paper puts forward a three-phase composite cylinder model with new boundary conditions. In this model, the interaction between edge dislocations and a coated CNT incorporating interface effect is investigated. The explicit expressions for the stress fields and the image force acting on an edge dislocation are proposed. In addition, plastic flow occurring around the coated reinforcement is addressed. The influences of interface condition and the material properties of coated CNT on the glide/climb force are clearly analyzed. The results indicate that the interface effect becomes remarkable when the radius of the coated reinforcement is below 10 nm. In addition, different from the traditional particles, the coated CNT attracts the adjacent edge dislocations, causing pronounced local hardening at the interface between the interphase and the metal matrix under certain conditions. It is concluded that the presence of the interphase can have a profound effect on the local stress field in CNT-reinforced MMNCs. Finally, the condition of the dislocations stability and the equilibrium numbers of dislocations at a given size grain are evaluated for considering the interface effect." @default.
- W2156504785 created "2016-06-24" @default.
- W2156504785 creator A5013728070 @default.
- W2156504785 creator A5029484872 @default.
- W2156504785 creator A5046225712 @default.
- W2156504785 creator A5072803315 @default.
- W2156504785 creator A5080044037 @default.
- W2156504785 creator A5084939652 @default.
- W2156504785 creator A5088044860 @default.
- W2156504785 date "2014-03-01" @default.
- W2156504785 modified "2023-10-16" @default.
- W2156504785 title "Interaction between edge dislocations and amorphous interphase in carbon nanotubes reinforced metal matrix nanocomposites incorporating interface effect" @default.
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