Application of a modified slip-distance theory to the indentation of single-crystal and polycrystalline copper to model the interactions between indentation size and structure size effects

2012 ◽  
Vol 60 (10) ◽  
pp. 4128-4135 ◽  
Author(s):  
Xiaodong Hou ◽  
Nigel M. Jennett
Keyword(s):  
Single Crystal ◽  
Size Effects ◽  
Polycrystalline Copper ◽  
Indentation Size ◽  
Slip Distance ◽  
Size And Structure

Depth-Dependent Hardness Characterization by Nanoindentation using a Berkovich Indenter with a Rounded Tip

2005 ◽  
Vol 875 ◽  
Author(s):  
Ju-Young Kim ◽  
David T. Read ◽  
Dongil Kwon
Keyword(s):  
Single Crystal ◽  
Size Effects ◽  
Function Method ◽  
Characteristic Length ◽  
Berkovich Indenter ◽  
Indentation Size ◽  
Height Difference ◽  
Force Microscopy ◽  
Atomic Force ◽  
Fused Quartz

AbstractThe height difference Δhb between the ideally sharp Berkovich indenter tip and a Δhb rounded tip was measured by direct observation using atomic force microscopy (AFM). The accuracy of the indirect area function method for measuring h was confirmed. The Δhb indentation size effects (ISE) in (100) single crystal copper, (100) single crystal tungsten, and fused quartz were characterized by applying the ISE model considering the rounded tip effect. The model fits the data these materials well, even though fused quartz does not deform by dislocations. However, a very small value of the ISE characteristic length h' was obtained for fused quartz. The present h' value for (100) copper is 32% larger than a previously-measured value for polycrystalline copper. This may indicate that grain boundaries suppress the dislocation activity envisioned in the ISE model.

scholarly journals Indentation size effects in single crystal copper as revealed by synchrotron x-ray microdiffraction

2008 ◽  
Vol 104 (4) ◽  
pp. 043501 ◽  
Author(s):  
G. Feng ◽  
A. S. Budiman ◽  
W. D. Nix ◽  
N. Tamura ◽  
J. R. Patel
Keyword(s):  
Single Crystal ◽  
Size Effects ◽  
Indentation Size ◽  
Single Crystal Copper ◽  
X Ray

Indentation-size effects in single-crystal MgO

2002 ◽  
Vol 82 (10) ◽  
pp. 2113-2120 ◽  
Author(s):  
X. J. Ren ◽  
R. M. Hooper ◽  
C. Griffiths ◽  
J. L. Henshall
Keyword(s):  
Single Crystal ◽  
Size Effects ◽  
Indentation Size

Indentation Size Effects in the Nano and Microhardness of FCC Single Crystal Metals

2007 ◽  
Vol 22 (2) ◽  
pp. 228-237 ◽  
Author(s):  
Z. Zong ◽  
J. Lou ◽  
O. O. Adewoye ◽  
A. A. Elmustafa ◽  
F. Hammad ◽  
...  
Keyword(s):  
Single Crystal ◽  
Size Effects ◽  
Indentation Size

Indentation size effects in the nano- and micro-hardness of fcc single crystal metals

2006 ◽  
Vol 434 (1-2) ◽  
pp. 178-187 ◽  
Author(s):  
Z. Zong ◽  
J. Lou ◽  
O.O. Adewoye ◽  
A.A. Elmustafa ◽  
F. Hammad ◽  
...  
Keyword(s):  
Single Crystal ◽  
Size Effects ◽  
Micro Hardness ◽  
Indentation Size

A study of indentation work in homogeneous materials

2006 ◽  
Vol 21 (6) ◽  
pp. 1363-1374 ◽  
Author(s):  
Mengxi Tan
Keyword(s):  
Plastic Deformation ◽  
Elastic Modulus ◽  
Elastic Energy ◽  
Size Effects ◽  
Unit Volume ◽  
Plastic Work ◽  
Total Work ◽  
Indentation Size ◽  
Scaling Relationships ◽  
Homogeneous Materials

The work of indentation is investigated experimentally in this article. A method of using the elastic energy to extract the elastic modulus is proposed and verified. Two types of hardness related to the work of indentation are defined and examined: Hwtis defined as the total work required creating a unit volume of contact deformationand Hwp is defined as the plastic work required creating a unit volume of plastic deformation; experiments show that both hardness definitions are good choices for characterizing hardness. Several features that may provide significant insights in understanding indentation measurements are studied. These features mainly concern some scaling relationships in indentation measurements and the indentation size effects.

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