Micromechanics of pyramidal indentation in fcc metals: Single crystal plasticity finite element analysis

Alcalá, Jorge; Casals, O.; Očenášek, Jan

doi:10.1016/j.jmps.2008.07.004

Cited by 59 publications

(45 citation statements)

References 60 publications

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“…Some of these [4,10,18,20,21] have related the appearance of pile-up and sink-in patterns to hardening properties. Liu et al [15] reported that the amount of pile-up is greater when the radius of the spherical indenter used is larger, but, for Wang et al [6], the prediction of pile-up or sink-in patterns was not so obvious.…”

Section: Sensitivity Of the Pile-up And Sink-in Patternsmentioning

confidence: 99%

Interests and limitations of nanoindentation for bulk multiphase material identification: Application to the β phase of Ti-5553

et al. 2009

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This paper focuses on the numerical modeling of nanoindentation tests. The first goal of this study is to collect essential material parameters and boundary conditions from the literature and to complete the data required to accurately model nanoindentation tests. The second goal of this study consists in validating the material parameters identified from macroscopic tensile tests of the body-centered cubic β phase of Ti-5553, a new generation of titanium alloy. This validation is performed looking at experimental and numerical nanoindentation curves obtained for different grain orientations.

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Section: Sensitivity Of the Pile-up And Sink-in Patternsmentioning

confidence: 99%

Interests and limitations of nanoindentation for bulk multiphase material identification: Application to the β phase of Ti-5553

et al. 2009

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“…Along the present line, keep in mind that for any arbitrary fcc metal, p and a change in less than 5% for any given orientation. 18 …”

Section: Discussionmentioning

confidence: 99%

“…17 A modification to this model has recently been proposed in Ref. 18 to improve its physical basis. Although this modification significantly improves the accuracy in the predicted uniaxial stress-strain curves for copper crystals pulled in different crystalline orientations, the contact response was not substantially affected.…”

Section: A Finite Element Simulationsmentioning

confidence: 99%

“…On the other hand, the reduction in the strain hardening rate that occurs in crystals deforming through the planar glide, favoring stage-III and, therefore, a marked hardening saturation, can be envisioned to result in a reduction of hardening coefficient n in the present context of homogenized mechanical properties. 18 These crystals are therefore anticipated to exhibit smaller values of h r =h max , so that the exclusive use of the P-h s curve may suffice in the extraction of J 2 -plasticity-equivalent properties at the present level of uncertainties in the determination of the penetration depth ratios.…”

Section: The Influence Of Elastoplastic Anisotropy Upon Mechanicalmentioning

confidence: 99%

“…More importantly, the inferred properties have been found to describe a polycrystalline aggregate composed of the indented crystals. 17,18 The resulting J 2 -plasticity-equivalent properties are relevant to both material characterizations and structural design, where they can be used to assess the elastic and plastic deformations of the material when subjected to arbitrary three-dimensional loading configurations. Because isotropic J 2 -plasticity is conventionally assumed in these assessments, it is desirable to ensure that the extracted properties already concur with this theory.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The role of crystalline anisotropy in mechanical property extractions through Berkovich indentation

2009

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This work uses crystal plasticity finite element simulations to elucidate the role of elastoplastic anisotropy in instrumented indentation P-h s curve measurements in face-centered cubic (fcc) crystals. It is shown that although the experimental fluctuations in the loading stage of the P-h s curves can be attributed to anisotropy, the variability in the unloading stage of the experiments is much greater than that resulting from anisotropy alone. Moreover, it is found that the conventional procedure used to evaluate the contact variables ruling the unloading P-h s curve introduces an uncertainty that approximates to the more fundamental influence of anisotropy. In view of these results, a robust procedure is proposed that uses contact area measurements in addition to the P-h s curves to extract homogenized J 2 -plasticity-equivalent mechanical properties from single crystals.

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Crystal Plasticity FEM Study of the Effects of BW Hardening Model Parameters on Nano‐Indentation Deformation Behaviour of Copper Single Crystal

Liu

Lü

Tieu

2014

TMS 2014 Supplemental Proceedings

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Micromechanics of pyramidal indentation in fcc metals: Single crystal plasticity finite element analysis

Cited by 59 publications

References 60 publications

Interests and limitations of nanoindentation for bulk multiphase material identification: Application to the β phase of Ti-5553

Interests and limitations of nanoindentation for bulk multiphase material identification: Application to the β phase of Ti-5553

The role of crystalline anisotropy in mechanical property extractions through Berkovich indentation

Crystal Plasticity FEM Study of the Effects of BW Hardening Model Parameters on Nano‐Indentation Deformation Behaviour of Copper Single Crystal

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