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- W4280616341 endingPage "143253" @default.
- W4280616341 startingPage "143253" @default.
- W4280616341 abstract "Nanolayered metallic composites have exhibited ultrahigh strength but compromised ductility due to their vulnerability to shear instability during deformation. Here we show that a gradient nanolayer design is effective in tuning the resistance to shear instability of the layered composites. The gradient design is realized by architecting a gradient distribution in the constituent layer thickness from the surface to the core. A combination of nano and micro-indentation tests and scanning transmission electron microscopy is employed to investigate the shear instability of the newly designed gradient nanolayered Cu/Zr composites. The nanoindentation tests show that the plastic pileup (sign of shear banding) is eliminated in the gradient nanolayered sample with more thin layers, while the microindentation tests show that less shear bands are formed by increasing the number of thin layers. Both tests demonstrated an enhanced resistance to shear instability by an appropriate gradient nanolayer design, which can be attributed to the improved strain delocalization capability and high dislocation density." @default.
- W4280616341 created "2022-05-22" @default.
- W4280616341 creator A5008175263 @default.
- W4280616341 creator A5027416080 @default.
- W4280616341 creator A5041973735 @default.
- W4280616341 date "2022-06-01" @default.
- W4280616341 modified "2023-10-15" @default.
- W4280616341 title "Enhanced resistance to shear instability by gradient nanolayered structures in sputtered Cu/Zr composites" @default.
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