The interaction between Lateral size effect and grain size when scratching polycrystalline copper using a Berkovich indenter

Kareer, Anna; Hou, Xueyan; Jennett, N M; Hainsworth, Sarah V.

doi:10.1080/14786435.2016.1240881

Cited by 13 publications

(6 citation statements)

References 23 publications

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“…In line with the H-P model description, the obstacle presented to slip penetrations by grain boundaries has been investigated in the bcc metals case by Soer, Aifantis and De Hosson [29] and more recently in (hcp) α-titanium via high resolution X-ray and electron microscope methods [30]. Related hardness and grain size dependent scratch results have been reported for polycrystalline copper [31]. The influence of H-P strengthening of polycrystalline diamond has been described [32] and also for cubic boron nitride via nanotwinned (boundary) strengthening [33].…”

Section: Polycrystals Polyphases and Amorphous Phasesmentioning

confidence: 74%

Crystal Indentation Hardness

2017

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Abstract:There is expanded interest in the long-standing subject of the hardness properties of materials. A major part of such interest is due to the advent of nanoindentation hardness testing systems which have made available orders of magnitude increases in load and displacement measuring capabilities achieved in a continuously recorded test procedure. The new results have been smoothly merged with other advances in conventional hardness testing and with parallel developments in improved model descriptions of both elastic contact mechanics and dislocation mechanisms operative in the understanding of crystal plasticity and fracturing behaviors. No crystal is either too soft or too hard to prevent the determination of its elastic, plastic and cracking properties under a suitable probing indenter. A sampling of the wealth of measurements and reported analyses associated with the topic on a wide variety of materials are presented in the current Special Issue.

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Section: Polycrystals Polyphases and Amorphous Phasesmentioning

confidence: 74%

Crystal Indentation Hardness

2017

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“…F R and F T are given by Equations (A.3) and (A.2) respectively for the EF tip geometry. The authors note an error in the equation for F R presented in the appendix of [24] and (A.3) is the correct expression.…”

Section: Discussionmentioning

confidence: 98%

“…The final profiling pass (pass 3), offers insights into elastic recovery. Full details of the three-pass scratch method are provided in [24]. The corrected penetration depth channel is plotted as a function of scratch distance in Figure 1(a).…”

Section: Nanoscratch and Nanoindentationmentioning

confidence: 99%

“…By further incorporating the lateral force into the measurement, it is possible to obtain a scratch hardness measurement that is in closer agreement to the indentation hardness, on isotropic materials [21,22]. This however, is not applicable to all material classes, particularly metallic samples that exhibit work hardening and anisotropy, as shown in [23,24]. A number of critical considerations must additionally be accounted for; namely the effect of friction, plasticity size effects, the resultant strain on the material, work hardening as a result of evolving dislocation structure and the direction of flow of displaced material in each loading direction [15].…”

Section: Introductionmentioning

confidence: 99%

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Scratching the Surface: Elastic Rotations Beneath Nanoscratch and Nanoindentation Tests

et al. 2020

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…The corrected penetration depth channel is plotted as a function of scratch distance in Figure 1(a). Full details of the scratch method are provided in [24].…”

Section: Nanoscratch and Nanoindentationmentioning

confidence: 99%

Scratching the surface: Elastic rotations beneath nanoscratch and nanoindentation tests

Kareer,

Tarleton,

Hardie

et al. 2020

Preprint

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In this paper, we investigate the residual deformation field in the vicinity of nano-scratch tests using two orientations of a Berkovich tip on an (001) Cu single crystal. We compare the deformation with that from indentation, in an attempt to understand the mechanisms of deformation in tangential sliding. The lattice rotation fields are mapped experimentally using high-resolution electron backscatter diffraction (HR-EBSD) on cross-sections prepared using focused ion beam (FIB). A physically-based crystal plasticity finite element model (CPFEM) is used to simulate the lattice rotation fields, and provide insight into the 3D rotation field surrounding nano-scratch experiments, as it transitions from an initial static indentation to a steady-state scratch. The CPFEM simulations capture the experimental rotation fields with good fidelity, and show how the rotations about the scratch direction are reversed as the indenter moves away from the initial indentation.

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The interaction between Lateral size effect and grain size when scratching polycrystalline copper using a Berkovich indenter

Cited by 13 publications

References 23 publications

Crystal Indentation Hardness

Crystal Indentation Hardness

Scratching the Surface: Elastic Rotations Beneath Nanoscratch and Nanoindentation Tests

Scratching the surface: Elastic rotations beneath nanoscratch and nanoindentation tests

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