Plastic deformation behavior of Cu thin films during fatigue testing

Plastic deformation of freestanding thin films: Experiments and modeling

Experimental measurements and computational results for the evolution of plastic deformation in freestanding thin films are compared. In the experiments, the stress–strain response of two sets of Cu films is determined in the plane-strain bulge test. One set of samples consists of electroplated Cu films, while the other set is sputter-deposited. Unpassivated films, films passivated on one side ...

Plastic Deformation Modes of CuZr/Cu Multilayers.

We synthesized CuZr/Cu multilayers and performed nanoindentation testing to explore the dependence of plastic deformation modes on the thickness of CuZr layers. The Cu layers were 18 nm thick and the CuZr layers varied in thickness from 4 nm to 100 nm. We observed continuous plastic co-deformation in the 4 nm and 10 nm CuZr - 18 nm Cu multilayers and plastic-induced shear instability in thick C...

Deformation Behavior of Thin Lubricant Films at Elevated Pressure

Abnormal Plastic Behavior of Fine Grain Mp35n Alloy During Room Temperature Tensile Testing

In this paper, results of an investigation on the strain hardening responses of superalloy MP35N with two average grain sizes of 38 and 1 μm, during room temperature tensile testing are reported. The microstructural evolution of the deformed samples was studied using optical and transmission electron microscopy (TEM) techniques. The strain hardening behavior of the 38 μm material was rather sim...

TENSILE TESTING OF FREE-STANDING Cu, Ag AND Al THIN FILMS AND Ag/Cu MULTILAYERS

ÐFree standing polycrystalline thin ®lms with a strong h111i texture were tested in uniaxial tension. Studied were electron-beam deposited Ag, Cu and Al ®lms, and Ag/Cu multilayers consisting of alternating Ag and Cu layers of equal thickness, between 1.5 nm and 1.5 mm (bilayer repeat length, l, between 3 nm and 3 mm). The ®lms had a total thickness of about 3 mm. A thin polymeric two-dimension...