ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The plasticity of a copper (Cu) nano-component is experimentally evaluated by a cantileverspecimen with multi-layered structure. The cantilever is monotonically loaded by a diamond tip andthe deflection at the free-end is precisely measured by a transmission electron microscope (TEM).The plastic deformation of the Cu nano-component is successfully monitored through the non-linearbehavior of applied load, P, and cantilever deflection, δ. The plastic constitutive quation of the Cucomponent is inversely analyzed by finite element method (FEM) assuming that the component obeysthe Ramberg-Osgood law. The parameters in the R-O law (σ0, n and α) are optimally fitted toreproduce the experimentally evaluated P-δ relation. The resultant parameter set is derived as (σ0, n,α) = (345 MPa, 3.2, 1.25). The Cu nano-component has a much higher yield stress and a hardeningrate compared with the ones in a bulk Cu
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.567-568.297.pdf
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