Evaluation of grain-average stress tensor in a tensile-deformed Al–Mn polycrystal by high-energy X-ray diffraction

Renversade, Loïc; Borbély, András

doi:10.1107/s1600576717008238

Cited by 11 publications

(8 citation statements)

References 42 publications

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“…(Oddershede et al, 2010). Therefore a grain position error of around half a detector pixel (pixel size = 172 mm) is expected here, and comparable with other 3DXRD studies (which typically use detectors with much smaller pixel sizes) (Poulsen, 2012;Nervo et al, 2014;Renversade & Borbe ´ly, 2017). A significant difference between the horizontal and vertical positional errors was observed, as in other 3DXRD experiments, such as that by Nervo et al (2014).…”

Section: Grain Positionsupporting

confidence: 89%

Implementing and evaluating far-field 3D X-ray diffraction at the I12 JEEP beamline, Diamond Light Source

D.¹,

Kareer²,

Michalik³

et al. 2022

J Synchrotron Radiat

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Three-dimensional X-ray diffraction (3DXRD) is shown to be feasible at the I12 Joint Engineering, Environmental and Processing (JEEP) beamline of Diamond Light Source. As a demonstration, a microstructually simple low-carbon ferritic steel was studied in a highly textured and annealed state. A processing pipeline suited to this beamline was created, using software already established in the 3DXRD user community, enabling grain centre-of-mass positions, orientations and strain tensor elements to be determined. Orientations, with texture measurements independently validated from electron backscatter diffraction (EBSD) data, possessed a ∼0.1° uncertainty, comparable with other 3DXRD instruments. The spatial resolution was limited by the far-field detector pixel size; the average of the grain centre of mass position errors was determined as ±∼80 µm. An average per-grain error of ∼1 × 10−3 for the elastic strains was also measured; this could be reduced in future experiments by improving sample preparation, geometry calibration, data collection and analysis techniques. Application of 3DXRD onto I12 shows great potential, where its implementation is highly desirable due to the flexible, open architecture of the beamline. User-owned or designed sample environments can be used, thus 3DXRD could be applied to previously unexplored scientific areas.

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Section: Grain Positionsupporting

confidence: 89%

Implementing and evaluating far-field 3D X-ray diffraction at the I12 JEEP beamline, Diamond Light Source

D.¹,

Kareer²,

Michalik³

et al. 2022

J Synchrotron Radiat

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show abstract

“…This could allow for the detection of a greater number of scattering vectors per grain on average, which would reduce the number of outliers created by GrainSpotter. The error in horizontal position provided by FitAllB is primarily determined by propagating the experimental errors in peak position and ω (Oddershede et al, (Poulsen, 2012;Nervo et al, 2014;Renversade and Borbély, 2017). A significant difference between the horizontal and vertical positional errors in Table 3 was observed, as in other 3DXRD experiments, such as that by (Nervo et al, 2014).…”

Section: Grain Positionmentioning

confidence: 91%

Implementing and evaluating far-field 3D X-ray diffraction at the I12 JEEP beamline, Diamond Light Source

Ball,

Kareer,

Magdysyuk

et al. 2021

Preprint

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Three Dimensional X-ray Diffraction (3DXRD) is shown to be feasible at the I12 JEEP Beamline of Diamond Light Source. As a demonstration, a microstructually simple low-carbon ferritic steel was studied in a highly textured and annealed state. A processing pipeline suited to this beamline was created, using software already established in the 3DXRD user community, enabling grain centre-of-mass positions, orientations and strain tensor elements to be determined. Orientations, with texture measurements independently validated from electron backscatter diffraction (EBSD) data, possessed a ∼0.1°uncertainty, comparable to other 3DXRD instruments. The spatial resolution was limited by the far-field detector pixel size; the average of the grain centre of mass position errors were determined as ± ∼80 µm. An average per-grain error of ∼1 × 10 −3 for the elastic strains were also measured; this could be reduced in future experiments by improving sample preparation, data collection and analysis techniques. Application of 3DXRD onto I12 shows great potential, where its implementation is highly desirable due the flexible, open architecture of the beamline. User owned or designed sample environments can be used, thus 3DXRD could be applied to previously unexplored scientific areas.

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“…Here, we use the theoretical approach of 3DXRD, which helps a better understanding of the required intensity corrections and at the same time emphasizes that texture, as a volume-weighted orientation distribution, represents only a subset of the more general information available in 3DXRD. In the latter method, besides crystallographic orientation and volume of the grains, their centre-of-mass position and the strain tensor prevailing in each single grain can also be determined (Oddershede et al, 2010;Renversade & Borbé ly, 2017).…”

Section: Figurementioning

confidence: 99%

“…Pole figure construction needs several corrections. Therefore, the diffraction setup should be first calibrated, which was done using a NIST certified CeO 2 powder (SRM 674b) and custom-written MATLAB (The Mathworks Inc., Natick, MA, USA) routines (Renversade & Borbé ly, 2017) implementing the procedure described by Borbé ly et al (2014). The fitted parameters given in Table S1 of the supplementary material indicate that the detector is almost perpendicular to the beam and equation 2, which is valid for the ideal geometry, can be applied in the present case.…”

Section: Figurementioning

confidence: 99%

Combined texture and microstructure analysis of deformed crystals by high-energy X-ray diffraction

et al. 2018

Self Cite

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It is shown that high‐energy X‐ray diffraction allows a fast and accurate texture and microstructure analysis of crystals, which can help to set up optimal industrial procedures for materials manufacturing. This paper presents the experimental and theoretical aspects of quantitative texture analysis using high‐energy synchrotron beams. Intensity corrections are less important in this approach than in classical laboratory methods; however, the most important correction, related to the Lorentz factor, can introduce relative fraction changes of up to about 40% compared to the uncorrected case. The resolution of the orientation density function also influences the results. For example, the usual 5° resolution leads to relative deviations of up to 30% in the fraction of some components. The method allowed detection of small changes taking place during the recovery and continuous recrystallization of a cold‐rolled Al–TiB2 nanocomposite. Texture information was combined with the results of line profile analysis, evidencing the evolution of the average dislocation density and coherent domain size of the selected grain families. It was found that recovery, as described in terms of dislocation annihilation and coherent domain coarsening, takes place at similar rates in all components.

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Evaluation of grain-average stress tensor in a tensile-deformed Al–Mn polycrystal by high-energy X-ray diffraction

Cited by 11 publications

References 42 publications

Implementing and evaluating far-field 3D X-ray diffraction at the I12 JEEP beamline, Diamond Light Source

Implementing and evaluating far-field 3D X-ray diffraction at the I12 JEEP beamline, Diamond Light Source

Implementing and evaluating far-field 3D X-ray diffraction at the I12 JEEP beamline, Diamond Light Source

Combined texture and microstructure analysis of deformed crystals by high-energy X-ray diffraction

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