diffraction based imaging at the materials science beamline · 2018-07-11 · diffraction based...
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Diffraction Based Imaging at the Materials Science Beamline 27 Nov 2017 Jon Wright
Diffraction based imaging
at the Materials Science
Beamline
Jon Wright, Wolfgang Ludwig, Pavel Sedmak,
Marta Majkut, Carlotta Giacobbe, Thomas Buslaps
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Diffraction Based Imaging at the Materials Science Beamline 27 Nov 2017 Jon Wright
ID11 Materials Science beamline : upgraded 2006
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Diffraction Based Imaging at the Materials Science Beamline 27 Nov 2017 Jon Wright
EH1 hutch : Large in-situ experiments
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Diffraction Based Imaging at the Materials Science Beamline 27 Nov 2017 Jon Wright
e.g. In-situ levitated, laser heating system
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A. Bytchkov (a), L. Hennet (b), I. Pozdnyakova (b), D.
Zanghi (b), D.L. Price (b), F. Kargl (c), N. Greaves (c),
S. Jahn (d).
(a) ESRF
(b) CRMHT, Orléans (France)
(c) University of Wales, Aberystwyth (UK)
(d) GFZ, Telegrafenberg, Potsdam (Germany)
TIME-RESOLVED STRUCTURAL STUDY OF THE
GLASS TRANSITION IN GLASS FORMING LIQUIDS
EBS : better statistics at high Q for PDF
Larger Q range
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Near-field and far-field detectors
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Pixels >> Grains
Pixels << Grains
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Grain mapping : data processing
3DXRD :
• “tracking” principle
• Index and reconstruct
• 2D layers
DCT :
• Segmentation of spots
• “Index” discrete orientations
• Reconstruction of 3D volume
HEDM :
• Forward projection
• Supercomputer solves for
voxel by voxel orientations
• 2D layers
Topo-Tomography :
• Align on diffraction
• Inclined axis
• Reconstruct as for computed
laminography
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Crystallographic information, unit cell + space group are input
Schmidt et-al, Riso
Suter et-al, Carnegie Mellon
Ludwig et-al, INSA
Lyon/ESRF
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DCT
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DCT - 3D Orientation maps in crystals
EBS :
Better data for deformed materials
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Force Chains in Granular Matter
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Force-chain distributions in granular systems
Phys. Rev. E 89, 012203 (2014)
Ling Zhang, Yujie Wang, and Jie Zhang
Nature 435, 1079-1082 (2005)
Contact force measurements and
stress-induced anisotropy in granular
materials
T. S. Majmudar & R. P. Behringer
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Natural sand grains
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Promising results but the natural sand grains showed
significant internal structures (twins and cracks). On
loading the internal domains move with respect to
each other.
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Larger system – Collaboration with Steve Hall, Ryan Hurley, Jose Andrade
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Combined tomography
and diffraction
Analysis of strain tensors
Solve inversion problem
Determined contact forces
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Strain tensors of the quartz
grains versus applied load.
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Quantitative mechanical force
Information
Color represents strain tensors
Mapped onto surface of grains
32 grains.
Geotechnique Letters 5 236 2015
EBS:
More accurate strains
Smallest tomo pixel sizes
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Nanofocus endstation
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II. Design architecture – ID11 Nanoscope end-station
Page 15 l The new ID11 Nanoscope End-station l A nano-tomography scanner l L. Ducotté
Granite frame
Focusing optics
DetectorsSample positioning stages
Microscopes and autocollimator
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Tomography has no phase problem…
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Diffraction based imaging
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Point focus
(XRDCT)
Sample
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XRD-CT Powders, Nanoparticles, PDF’s
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XRD-CT for materials chemistry on working catalysts ID15A
Dynamic X-ray diffraction computed tomography
reveals real-time insight into catalyst active phase
evolution, S.D.M. Jacques (a,b), M. di Michiel (c),
A.M. Beale (a), T. Sochi (b), M.G. O’Brien (a), L.
Espinosa-Alonso (a), B.M. Weckhuysen (a) and P.
Barnes (b), Angew. Chem. Int. Ed. 50, 10148
(2011);
Active phase evolution in single
Ni/Al2O3 methanation catalyst bodies studied in
real time using combined μ-XRD-CT and μ-
absorption-CT, M.G. O’Brien (a), S.D.M. Jacques
(a,b), M. di Michiel (c), P. Barnes (b), B.M.
Weckhuysen (a) and A.M. Beale (a) Chem.
Sci. (2011); DOI: 10.1039/C1SC00637A.
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Diffraction tomography: Impurities in UMo (data from ID22)
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Impurity precipitation in atomized
particles evidenced by high
resolution diffraction tomography
Anne Bonnin, Jonathan Wright,
Rémi Tucoulou, and Hervé
Palancher
APPLIED PHYSICS LETTERS
104, 121910 (2014)
Data reduction is well
established for powder rings
“Spotty” diffraction patterns
are more challenging to
reconstruct.
Indexing of single grains has
been achieved, showing
orientation relations of
phases
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Index individual spots and reconstruct grain shapes
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Impurity precipitation in atomized particles evidenced by high resolution diffraction tomography
Anne Bonnin, Jonathan Wright, Rémi Tucoulou, and Hervé Palancher,
APPLIED PHYSICS LETTERS 104, 121910 (2014)
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Trace impurity phase mapped out
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1 wt% impurity phase
Clear orientation relationship between
U(C,O) and UMo
Multiple U(C,O) domains in single UMo
grain
Mainly found in larger UMo grains
Impurity precipitation in atomized particles evidenced by high resolution diffraction tomography
Anne Bonnin, Jonathan Wright, Rémi Tucoulou, and Hervé Palancher,
APPLIED PHYSICS LETTERS 104, 121910 (2014)
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Similar grain in DCT experiment at ID11
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ID11 near-field data
Processed for grain centre of mass
LARGE beamsize
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ESRF Upgrade Phase II : new machine
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~40X more photons at ID11 after CRL optics
Cleaner spectrum (no need for monochromator?)
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LaB6 in broader bandpass X-ray beam
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Thanks to our collaborators and beamline users who did the work that
was presented here
Thankyou for listening
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Line focus X-ray beam example…
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Sample
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Mapping strains in shape memory alloy
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Science (2016) 353 6299
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NiTi Shape Memory Alloy
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Comparison to EBSD 3D rendering of shear stress
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3D strain tensors at the martensite band front
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