Electron backscatter diffraction: Difference between revisions

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The local lattice distortion at the EBSP₀ influences the resultant HR-EBSD map, e.g., a reference pattern deformed in tension will directly reduce the HR-EBSD map tensile strain magnitude while indirectly influencing the other component magnitude and the strain's spatial distribution. Furthermore, the choice of EBSP₀ slightly affects the GND density distribution and magnitude, and choosing a reference pattern with a higher GND density reduces the cross-correlation quality, changes the spatial distribution and induces more errors than choosing a reference pattern with high lattice distortion. Additionally, there is no apparent connection between EBSP₀'s IQ and EBSP₀'s local lattice distortion.<ref name=":10" />

The use of simulated reference patterns for absolute strain measurement is still an active area of research<ref name=":22">{{Cite journal |last1=Winkelmann |first1=Aimo |last2=Trager-Cowan |first2=Carol |last3=Sweeney |first3=Francis |last4=Day |first4=Austin P. |last5=Parbrook |first5=Peter |date=2007 |title=Many-beam dynamical simulation of electron backscatter diffraction patterns |journal=Ultramicroscopy |volume=107 |issue=4 |pages=414–421 |doi=10.1016/j.ultramic.2006.10.006 |pmid=17126489}}</ref><ref>{{Cite journal |last1=Kacher |first1=Josh |last2=Landon |first2=Colin |last3=Adams |first3=Brent L. |last4=Fullwood |first4=David |date=2009-08-01 |title=Bragg's Law diffraction simulations for electron backscatter diffraction analysis |journal=Ultramicroscopy |volume=109 |issue=9 |pages=1148–1156 |doi=10.1016/j.ultramic.2009.04.007 |pmid=19520512}}</ref><ref>{{Cite journal |last1=Winkelmann |first1=A |last2=Nolze |first2=G |last3=Vos |first3=M |last4=Salvat-Pujol |first4=F |last5=Werner |first5=W S M |date=2016 |title=Physics-based simulation models for EBSD: advances and challenges |journal=IOP Conference Series: Materials Science and Engineering |volume=109 |issue=1 |pages=012018 |doi=10.1088/1757-899x/109/1/012018 |arxiv=1505.07982 |bibcode=2016MS&E..109a2018W |s2cid=38586851}}</ref><ref>{{Cite journal |last1=Alkorta |first1=Jon |last2=Marteleur |first2=Matthieu |last3=Jacques |first3=Pascal J. |date=2017 |title=Improved simulation based HR-EBSD procedure using image gradient based DIC techniques |journal=Ultramicroscopy |volume=182 |pages=17–27 |doi=10.1016/j.ultramic.2017.06.015 |pmid=28644960 |hdl=2078.1/186551 |hdl-access=free }}</ref><ref>{{Cite journal |last1=Winkelmann |first1=Aimo |last2=Nolze |first2=Gert |last3=Cios |first3=Grzegorz |last4=Tokarski |first4=Tomasz |last5=Bała |first5=Piotr |last6=Hourahine |first6=Ben |last7=Trager-Cowan |first7=Carol |date=November 2021 |title=Kikuchi pattern simulations of backscattered and transmitted electrons |journal=Journal of Microscopy |volume=284 |issue=2 |pages=157–184 |doi=10.1111/jmi.13051 |pmid=34275156 |s2cid=236091618 |url=https://strathprints.strath.ac.uk/78647/1/Winkelmann_etal_JM_2021_Kikuchi_pattern_simulations_of_backscattered_and_transmitted.pdf |access-date=20 March 2023 |archive-date=25 March 2023 |archive-url=https://web.archive.org/web/20230325200434/https://strathprints.strath.ac.uk/78647/1/Winkelmann_etal_JM_2021_Kikuchi_pattern_simulations_of_backscattered_and_transmitted.pdf |url-status=live }}</ref><ref>{{Cite journal |last=Winkelmann |first=A. |date= 2010 |title=Principles of depth-resolved Kikuchi pattern simulation for electron backscatter diffraction: KIKUCHI PATTERN SIMULATION FOR EBSD |journal=Journal of Microscopy |volume=239 |issue=1 |pages=32–45 |doi=10.1111/j.1365-2818.2009.03353.x |pmid=20579267 |s2cid=23590722}}</ref><ref>{{Cite journal |last1=Vermeij |first1=Tijmen |last2=De Graef |first2=Marc |last3=Hoefnagels |first3=Johan |date=2019-03-15 |title=Demonstrating the potential of accurate absolute cross-grain stress and orientation correlation using electron backscatter diffraction |journal=Scripta Materialia |volume=162 |pages=266–271 |doi=10.1016/j.scriptamat.2018.11.030 |arxiv=1807.03908 |s2cid=54575778 }}</ref><ref name="Angus J 2019">{{Cite journal |last1=Tanaka |first1=Tomohito |last2=Wilkinson |first2=Angus J. |date=2019-07-01 |title=Pattern matching analysis of electron backscatter diffraction patterns for pattern centre, crystal orientation and absolute elastic strain determination – accuracy and precision assessment |journal=Ultramicroscopy |volume=202 |pages=87–99 |doi=10.1016/j.ultramic.2019.04.006 |pmid=31005023 |arxiv=1904.06891 |s2cid=119294636 }}</ref> and scrutiny<ref name=":8" /><ref name="Angus J 2019"/><ref name="Brent L 2010">{{Cite journal |last1=Kacher |first1=Josh |last2=Basinger |first2=Jay |last3=Adams |first3=Brent L. |last4=Fullwood |first4=David T. |date=2010-06-01 |title=Reply to comment by Maurice et al. in response to "Bragg's Law Diffraction Simulations for Electron Backscatter Diffraction Analysis" |journal=Ultramicroscopy |volume=110 |issue=7 |pages=760–762 |doi=10.1016/j.ultramic.2010.02.004 |pmid=20189305 }}</ref><ref>{{Cite journal |last1=Britton |first1=T. 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Other methods assumed that absolute strain at EBSP₀ can be determined using [[crystal plasticity]] finite-element (CPFE) simulations, which then can be then combined with the HR-EBSD data (e.g., using linear 'top-up' method<ref>{{Cite journal |last1=Zhang |first1=Tiantian |last2=Collins |first2=David M. |last3=Dunne |first3=Fionn P. E. |last4=Shollock |first4=Barbara A.|author4-link=Barbara Shollock |date=2014|title=Crystal plasticity and high-resolution electron backscatter diffraction analysis of full-field polycrystal Ni superalloy strains and rotations under thermal loading |journal=Acta Materialia |volume=80 |pages=25–38 |doi=10.1016/j.actamat.2014.07.036 |hdl=10044/1/25979 |hdl-access=free }}</ref><ref>{{Cite journal |last1=Guo |first1=Yi |last2=Zong |first2=Cui |last3=Britton |first3=T. B. |date=2021 |title=Development of local plasticity around voids during tensile deformation |journal=Materials Science and Engineering: A |volume=814 |pages=141227 |doi=10.1016/j.msea.2021.141227 |arxiv=2007.11890 |s2cid=234850241 }}</ref> or displacement integration<ref name=":33" />) to calculate the absolute lattice distortions.

In addition, GND density estimation is nominally insensitive to (or negligibly dependent upon<ref>{{Cite journal |last1=Jiang |first1=J. |last2=Britton |first2=T. B. |last3=Wilkinson |first3=A. J. |date=2013-11-01 |title=Evolution of dislocation density distributions in copper during tensile deformation |journal=Acta Materialia |volume=61 |issue=19 |pages=7227–7239 |doi=10.1016/j.actamat.2013.08.027 |bibcode=2013AcMat..61.7227J |doi-access=free }}</ref><ref>{{Cite journal |last1=Britton |first1=T B |last2=Hickey |first2=J L R |date= 2018 |title=Understanding deformation with high angular resolution electron backscatter diffraction (HR-EBSD) |journal=IOP Conference Series: Materials Science and Engineering |volume=304 |issue=1 |pages=012003 |doi=10.1088/1757-899x/304/1/012003 |bibcode=2018MS&E..304a2003B |s2cid=54529072 |arxiv=1710.00728 }}</ref>) EBSP₀ choice, as only neighbour point-to-point differences in the lattice rotation maps are used for GND density calculation.<ref>{{Cite journal |last1=Kalácska |first1=Szilvia |last2=Dankházi |first2=Zoltán |last3=Zilahi |first3=Gyula |last4=Maeder |first4=Xavier |last5=Michler |first5=Johann |last6=Ispánovity |first6=Péter Dusán |last7=Groma |first7=István |date=2020 |title=Investigation of geometrically necessary dislocation structures in compressed Cu micropillars by 3-dimensional HR-EBSD |journal=Materials Science and Engineering: A |volume=770 |pages=138499 |doi=10.1016/j.msea.2019.138499 |s2cid=189928469 |url=https://bib-pubdb1.desy.de/record/426593 |access-date=20 March 2023 |archive-date=17 July 2020 |archive-url=https://web.archive.org/web/20200717095713/http://bib-pubdb1.desy.de/record/426593 |url-status=live |arxiv=1906.06980 }}</ref><ref>{{Cite journal |last1=Wallis |first1=David |last2=Hansen |first2=Lars N. |last3=Britton |first3=T. Ben |last4=Wilkinson |first4=Angus J. |date= 2017 |title=Dislocation Interactions in Olivine Revealed by HR-EBSD: Dislocation Interactions in Olivine |journal=Journal of Geophysical Research: Solid Earth |volume=122 |issue=10 |pages=7659–7678 |doi=10.1002/2017JB014513|hdl=10044/1/50615 |s2cid=134570945 |url=https://ora.ox.ac.uk/objects/uuid:54d4800c-a2c5-4434-be22-776d11aa2156 |hdl-access=free }}</ref> However, this assumes that the absolute lattice distortion of EBSP₀ only changes the relative lattice rotation map components by a constant value which vanishes during derivative operations, i.e., lattice distortion distribution is insensitive to EBSP₀ choice.<ref name=":9" /><ref name=":10">{{Cite journal |last1=Koko |first1=Abdalrhaman |last2=Tong |first2=Vivian |last3=Wilkinson |first3=Angus J. |author-link3=Angus Wilkinson |last4=Marrow |first4=T. James |author-link4=James Marrow |date=2023 |title=An iterative method for reference pattern selection in high-resolution electron backscatter diffraction (HR-EBSD) |journal=Ultramicroscopy |volume=248 |pages=113705 |arxiv=2206.10242 |doi=10.1016/j.ultramic.2023.113705 |pmid=36871367 |s2cid=249889699}}{{Creative Commons text attribution notice|cc=by4|from this source=yes}}</ref>