Review on Strain Localization Phenomena Studied by High‐Resolution Digital Image Correlation

Weidner, Anja; Biermann, Horst

doi:10.1002/adem.202001409

Cited by 26 publications

(10 citation statements)

References 163 publications

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“…The dislocation density, transformation volume percent and subsequent stress increase significantly when moving towards the ceramic/matrix interface. This very high localization of attributes has also reported by researchers previously [54,55]. Closely looking at the trends in (ii) damage zones and subsequent strain spikes are observed on the ceramic/matrix interface and grain boundaries of highly misoriented grains.…”

Section: Local Trendssupporting

confidence: 85%

Studying the Damage Evolution and the Micro-Mechanical Response of X8CrMnNi16-6-6 TRIP Steel Matrix and 10% Zirconia Particle Composite Using a Calibrated Physics and Crystal-Plasticity-Based Numerical Simulation Model

2021

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The mechanical behavior of newly developed composite materials is dependent on several underlying microstructural phenomena. In this research, a periodic 2D geometry of cast X8CrMnNi16-6-6 steel and 10% zirconia composite is virtually constructed by adopting microstructural attributes from literature. A physics-based crystal plasticity model with ductile damage criterion is used for defining the austenitic steel matrix. The zirconia particles are assigned elastic material model with brittle damage criterion. Monotonic quasi-static tensile load is applied up to 17% of total strain. The simulation results are analyzed to extract the global and local deformation, transformation, and damage behavior of the material. The comprehensively constructed simulation model yields the interdependence of the underlaying microstructural deformation phenomena. The local results are further analyzed based on the interlocked and free regions to establish the influence of zirconia particles on micro-mechanical deformation and damage in the metastable austenite matrix. The trends and patterns of local strain and damage predicted by the simulation model results match the previously carried out in-situ tensile tests on similar materials.

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Section: Local Trendssupporting

confidence: 85%

Studying the Damage Evolution and the Micro-Mechanical Response of X8CrMnNi16-6-6 TRIP Steel Matrix and 10% Zirconia Particle Composite Using a Calibrated Physics and Crystal-Plasticity-Based Numerical Simulation Model

2021

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“…The challenge here is that DIC measurements require surface markers to allow tracking of surface IOP Publishing doi:10.1088/1757-899X/1249/1/012006 6 displacements. In some cases these markers can be microstructural features such as those visible after chemical etching [28]. This, however, is not compatible with collection of EBSD data on metallic samples where a highly polished (either mechanically or electrolytically) smooth flat surface is required.…”

Section: Surface Patterning To Allow Combined Dic and Ebsd During In-...mentioning

confidence: 97%

Local deformation mechanisms in metal systems with a tailored grain size distribution

Godfrey

Gao

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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A large change in yield strength and ductility takes place in metals with a recrystallized average grain size in the near-micrometer grain size regime. This has been utilized to explore the influence of grain size heterogeneity on plastic deformation for recrystallized grains in aluminum prepared by spark plasma sintering, where tailoring of the grain size distribution and spatial arrangement can be achieved by selecting powder sizes and mixing conditions prior to sintering. The spatial variation of plastic deformation has been explored by digital image correlation (DIC), either at the sample scale or at the grain scale. For the latter colloidal SiO2 markers also allow repeated collection of electron backscatter diffraction data over the same area during in-situ deformation, proving correlated information on local displacement gradients and crystal lattice rotations. For samples prepared from well-mixed powders only small deviations from a rule-of-mixtures in the yield strength are observed. A mesoscale pattern of strain distribution is observed from DIC investigations where this is related to, but not fully consistent with, the spatial arrangement of fine and coarse grains. In the case of macroscopically layered arrangements of coarse and fine grains, deformation is dominated by development of local strain concentrations, which take place preferentially in the fine grain regions.

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“…This version of DIC is used to estimate 3D displacement fields on the specimen surface. The surfaces over which measurements are made with DIC are typically several cm 2 in size, but this technique can also be used at the microscale with SEM [5][6][7][8]. DIC is sometimes coupled with EBSD to correlate the results with crystal orientations, as illustrated later on in this paper.…”

Section: Digital Image Correlationmentioning

confidence: 99%

Applying Full-Field Measurement Techniques for the Thermomechanical Characterization of Shape Memory Alloys: A Review and Classification

Delpueyo

Jury

Balandraud

et al. 2021

Shap. Mem. Superelasticity

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Full-field measurement techniques are now mature. As such, they have profoundly impacted the experimental mechanics community in recent years. The way that shape memory alloys (SMAs) are now tested is not spare from this deep-rooted trend, as reflected by the increasing number of papers published in the SMA literature. In this context, the aim of this contribution is to give an overview of the use of full-field measuring techniques for SMA characterization purposes. We recall first the basic principle of one volume and four surface techniques employed in this community. Several typical papers where such techniques are employed are then presented, by highlighting in each case the extent to which the thermomechanical response of SMAs could be better understood and modeled thanks to these techniques. A classification by several criteria of about 300 references is finally offered and discussed. The main criteria are the type of SMA, the type of technique employed to perform the measurements, and the type of test.

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Review on Strain Localization Phenomena Studied by High‐Resolution Digital Image Correlation

Cited by 26 publications

References 163 publications

Studying the Damage Evolution and the Micro-Mechanical Response of X8CrMnNi16-6-6 TRIP Steel Matrix and 10% Zirconia Particle Composite Using a Calibrated Physics and Crystal-Plasticity-Based Numerical Simulation Model

Studying the Damage Evolution and the Micro-Mechanical Response of X8CrMnNi16-6-6 TRIP Steel Matrix and 10% Zirconia Particle Composite Using a Calibrated Physics and Crystal-Plasticity-Based Numerical Simulation Model

Local deformation mechanisms in metal systems with a tailored grain size distribution

Applying Full-Field Measurement Techniques for the Thermomechanical Characterization of Shape Memory Alloys: A Review and Classification

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