Experimental and Numerical Investigation of the Role of Grain Boundary Misorientation Angle on the Dislocation–Grain Boundary Interactions

Canadinç, D.; Biyikli, E.; Niendorf, Т.; Maier, Hans Jürgen

doi:10.1002/adem.201000229

Cited by 34 publications

(13 citation statements)

References 38 publications

(88 reference statements)

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“…Furthermore, the experimental data obtained for defining the plastic flow at the microscopic level through crystal plasticity modeling should ideally be obtained under conditions where stability, and thus, the precision of the data can be ensured. 38,39,42 Intermediate strain rates, such as the one utilized in this work, satisfy this requirement, and therefore, the uniaxial deformation experiments featured a strain rate of 5 Â 10 À4 s…”

Section: Discussionmentioning

confidence: 99%

“…These effects are not considered in the current work as a detailed treatment is needed for their proper incorporation into VPSC. 38 More importantly, the stresses and strains attained in the current loading scenario, i.e., impact, are far greater than this relatively narrow zone, and thus, this difference can be disregarded in the current work.…”

Section: B Vpsc Modeling Of the Experimental Deformation Responsementioning

confidence: 98%

“…38 Once correctly formulated and verified with experimental data, such a model should predict the deformation response under any type of loading. 39 This gives way to an alternative approach, such that the deformation of NbZr can be modeled at the microscopic level based on the experimentally obtained uniaxial deformation response, followed by the prediction of equivalent stress-strain response, which can be utilized as a proper flow rule for the impact simulations, as discussed before.…”

Section: B Vpsc Modeling Of the Experimental Deformation Responsementioning

confidence: 99%

“…38,40 However, it has been previously demonstrated that the GBMA distribution is also an important element of texture that strongly influences the deformation response especially in the case of UFG materials. [11][12][13][26][27][28]38,42 With this objective, the authors had previously developed an algorithm that constructs a three-dimensional grain neighborhood based on the two-dimensional experimental texture measurements 42 to incorporate the role of GBMA distribution into crystal plasticity. 38 The corresponding results had demonstrated that the incorporation of the GBMA distribution provided more accurate predictions not only for UFG microstructures, but also for CG materials, when predicting the deformation response.…”

mentioning

confidence: 99%

“…[11][12][13][26][27][28]38,42 With this objective, the authors had previously developed an algorithm that constructs a three-dimensional grain neighborhood based on the two-dimensional experimental texture measurements 42 to incorporate the role of GBMA distribution into crystal plasticity. 38 The corresponding results had demonstrated that the incorporation of the GBMA distribution provided more accurate predictions not only for UFG microstructures, but also for CG materials, when predicting the deformation response. Admittedly, this approach was not considered in the current work as the emphasis was placed on establishing an initial multiscale modeling approach to the problem of accurately predicting the impact response of the biomedical NbZr alloy.…”

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confidence: 99%

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Microstructure-based modeling of the impact response of a biomedical niobium–zirconium alloy

et al. 2014

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This article presents a new multiscale modeling approach proposed to predict the impact response of a biomedical niobium-zirconium alloy by incorporating both geometric and microstructural aspects. Specifically, the roles of both anisotropy and geometry-based distribution of stresses and strains upon loading were successfully taken into account by incorporating a proper multiaxial material flow rule obtained from crystal plasticity simulations into the finite element (FE) analysis. The simulation results demonstrate that the current approach, which defines a hardening rule based on the location-dependent equivalent stresses and strains, yields more reliable results as compared with the classical FE approach, where the hardening rule is based on the experimental uniaxial deformation response of the material. This emphasizes the need for proper coupling of crystal plasticity and FE analysis for the sake of reliable predictions, and the approach presented herein constitutes an efficient guideline for the design process of dental and orthopedic implants that are subject to impact loading in service.

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Section: Discussionmentioning

confidence: 99%

Section: B Vpsc Modeling Of the Experimental Deformation Responsementioning

confidence: 98%

Section: B Vpsc Modeling Of the Experimental Deformation Responsementioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Microstructure-based modeling of the impact response of a biomedical niobium–zirconium alloy

et al. 2014

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Solid State Processing of Aluminum Matrix Composites Reinforced with Nanoparticulate Materials

et al. 2018

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A simple powder metallurgy route is investigated at Empa for producing aluminum matrix nanocomposites. High energy ball milling has proven to be an efficient method for dispersing the nanoparticles into the matrix even up to high amount. The compaction of these blends at moderate temperature leads to dense nanocomposite materials with high strength whatever the nature of the reinforcement. Hot pressing, spark plasma sintering, and hot isostatic pressing induce the same tensile properties at rupture but higher yield strength can be observed for the simple hot pressing process. High strength can be only combined with high ductility for nanoparticle content below 1 vol%. These outstanding properties are achieved thanks to a homogenous nanoparticle dispersion as well as a bimodal grain size distribution with fine (<300 nm) and coarser grains (a few microns). The materials do not require subsequent heat or work hardening treatment and exhibit better or similar properties as the conventional high strength aluminum alloys. Finally, it is demonstrated that friction stir welding is a valuable process for joining these nanocomposites.

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Ultrafine-Grained Materials

Behera

2021

Advanced Materials

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Experimental and Numerical Investigation of the Role of Grain Boundary Misorientation Angle on the Dislocation–Grain Boundary Interactions

Cited by 34 publications

References 38 publications

Microstructure-based modeling of the impact response of a biomedical niobium–zirconium alloy

Microstructure-based modeling of the impact response of a biomedical niobium–zirconium alloy

Solid State Processing of Aluminum Matrix Composites Reinforced with Nanoparticulate Materials

Ultrafine-Grained Materials

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