Nanoindentation studies of materials

Schuh, Christopher A.

doi:10.1016/s1369-7021(06)71495-x

Cited by 629 publications

(270 citation statements)

References 118 publications

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“…By addressing the very earliest stages of deformation, one obtains fundamental insight into the intrinsic flow mechanism of materials and the origin of plastic flow. A powerful technique in this respect is nanoindentation, in which a small tip probes a small nanometer-size volume to resolve individual relaxation events at the onset of flow [1][2][3][4][5][6][7]. Typically, this technique measures the applied force as a function of indentation depth to produce force-displacement curves, in which discontinuities indicate single events of deformation.…”

Section: Introductionmentioning

confidence: 99%

Visualizing the strain evolution during the indentation of colloidal glasses

et al. 2014

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We use an analog of nanoindentation on a colloidal glass to elucidate the incipient plastic deformation of glasses. By tracking the motion of the individual particles in three dimensions, we visualize the strain field and glass structure during the emerging deformation. At the onset of flow, we observe a power-law distribution of strain indicating strongly correlated deformation, and reflecting a critical state of the glass. At later stages, the strain acquires a Gaussian distribution, indicating that plastic events become uncorrelated. Investigation of the glass structure using both static and dynamic measures shows a weak correlation between the structure and the emerging strain distribution. These results indicate that the onset of plasticity is governed by strong power-law correlations of strain, weakly biased by the heterogeneous glass structure.

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Section: Introductionmentioning

confidence: 99%

Visualizing the strain evolution during the indentation of colloidal glasses

et al. 2014

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“…Nanoindentation has become a valuable tool to study fundamental aspects of plasticity such as dislocation nucleation [1][2][3][4][5][6][7]. The power of this technique lies in its ability to probe ultra-small and therefore virtually defect-free sample volumes.…”

Section: Introductionmentioning

confidence: 99%

Dislocation nucleation in bcc Ta single crystals studied by nanoindentation

et al. 2007

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“…Mechanical properties and deformation mechanism of BMGs are given more and more attention in recent years. Because of its high spatial and temporal resolution, indentation remains an important tool to study mechanical properties of BMGs (Schuh, 2006). Unique phenomena such as the serrated flow and shear band formation underneath indenters have been reported during the ex-situ indentation tests (Wang et al, 2000;Schuh & Nieh, 2003;Li et al, 2009).…”

Section: In Situ Indentation Test Inside the Semmentioning

confidence: 99%