Une introduction à la plasticité cristalline interactions avec l'environnement

Cailletaud, Georges

doi:10.1051/ptox/2009008

Cited by 2 publications

(3 citation statements)

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“…6b: 〈100〉 < 〈110〉 < 〈111〉 (Delobelle et al, 2009(Delobelle et al, , 2011. Vlassak & Nix Nix, 1993, 1994) and Delobelle et al (Delobelle et al, 2011, 2009.…”

Section: -3 Correction To the Hardness And Modulus From Topography Mmentioning

confidence: 99%

“…The stiffness tensor ̿ was considered to model the single crystal elastic response, which is composed of three terms 11 , 12 and 44 due to the fact that nickel presents a FCC structure. The Méric-Cailletaud size independent single crystal plasticity model has been used to describe its viscoplastic behaviour Fivel, 2004;Cailletaud, 2009). In this model, the transformation gradient ̿ is decomposed as follows:…”

Section: -1 Single Crystal Plasticity Constitutive Lawsmentioning

confidence: 99%

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Sensitivity of the residual topography to single crystal plasticity parameters in Berkovich nanoindentation on FCC nickel

Renner

Gaillard

Richard

et al. 2016

International Journal of Plasticity

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Fundamental deformation mechanisms of FCC materials under indentation have been probed at the grain scale. Experimental tests have been conducted on large-grained annealed and cold-worked polycrystalline nickel samples with a Berkovich indenter. Indentation axes have been chosen to be close to the three main crystallographic directions [001], [101] and [111]. Pileups and slip traces have been revealed around the residual imprints by analysing topographic measurements obtained by atomic force microscopy. It is shown that the indenter orientation in each indentation plane drives pileups and slip traces which in turn contain precious information about the crystallographic orientation and the hardening state of the studied grain. Imprint topographies after pileup formation therefore carry information that one can exploit to assess some intrinsic material properties at the grain scale. A 3D finite element modelling of the nanoindentation test at the grain scale has been developed, making use of crystal plasticity constitutive laws. Six different virtual materials having the same macroscopic behaviour have been built. The simulation results show a good agreement with experimental tests and also a great pileup sensitivity to interaction matrix components. These results pave the way to the interaction matrix identification using an inverse finite element method. 1-Introduction Whether based on continuum mechanics or dislocation dynamics, crystal plasticity models involve generally a great number of material parameters, making the description of the phenomena very complete (

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“…6b: 〈100〉 < 〈110〉 < 〈111〉 (Delobelle et al, 2009(Delobelle et al, , 2011. Vlassak & Nix Nix, 1993, 1994) and Delobelle et al (Delobelle et al, 2011, 2009.…”

Section: -3 Correction To the Hardness And Modulus From Topography Mmentioning

confidence: 99%

Section: -1 Single Crystal Plasticity Constitutive Lawsmentioning

confidence: 99%

Sensitivity of the residual topography to single crystal plasticity parameters in Berkovich nanoindentation on FCC nickel

Renner

Gaillard

Richard

et al. 2016

International Journal of Plasticity

View full text Add to dashboard Cite

show abstract

“…Li et al, 2017), considering elastic anisotropy and vacancy-induced strain. Very few works have investigated the reformulation of crystal plasticity laws to account for the hydrogen effect on slips (Bal et al, 2017;Birnbaum and Sofronis, 1994;Cailletaud, 2009;Kumar et al, 2019;Vasios, 2015), or the correspondence between the diffusion process through a polycrystal and the equivalent homogeneous medium Jothi et al, 2015b).…”

Section: Introductionmentioning

confidence: 99%