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Torsion experiments on copper wires with different diameters but the same grain size are performed to figure out the individual contribution of plastic strain gradient to size effect. The samples are prepared by electropolishing the wires with an initial diameter of 50μm at room temperature for different time periods. A significant strain gradient effect is confirmed in wire torsion. Tensile results...
In order to study the intrinsic size effect of nanolaminates with unequal modulation ratios, CuTa/Cu nanolaminates with identical Cu layer volume fraction but different Cu layer thicknesses were prepared by varying the number of Cu layers. The hardness and indentation morphology of each CuTa/Cu nanolaminate was characterized by means of nanoindentation and scanning electron microscope. Furthermore,...
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