4D XRD for strain in many grains using triangulation
Abstract
Determination of the strains in a polycrystalline materialusing 4D XRD reveals subgrain and graintograin behavior as a functionof stress. Here 4D XRD involves an experimental procedure usingpolychromatic microbeam Xradiation (microLaue) to characterizepolycrystalline materials in spatial location as well as with increasingstress. The insitu tensile loading experiment measured strain in a modelaluminumsapphire metal matrix composite using the Advanced Light Source,Beamline 7.3.3. MicroLaue resolves individual grains in thepolycrystalline matrix. Results obtained from a list of grains sorted bycrystallographic orientation depict the strain states within and amongindividual grains. Locating the grain positions in the planeperpendicular to the incident beam is trivial. However, determining theexact location of grains within a 3D space is challenging. Determiningthe depth of the grains within the matrix (along the beam direction)involved a triangulation method tracing individual rays that producespots on the CCD back to the point of origin. Triangulation wasexperimentally implemented by simulating a 3D detector capturingmultiple diffraction images while increasing the camera to sampledistance. Hence by observing the intersection of rays from multiple spotsbelonging to the corresponding grain, depth is calculated. Depthresolution is a function of the number of images collected, grain to beamsize ratio, and the pixel resolution of the CCD. The 4DXRD methodprovides grain morphologies, strainmore »
 Authors:
 Publication Date:
 Research Org.:
 COLLABORATION  Oklahoma StateU.
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 922825
 Report Number(s):
 LBNL62844
Journal ID: ISSN 08857156; PODIE2; R&D Project: A580ES; BnR: KC0204016; TRN: US0801758
 DOE Contract Number:
 DEAC0205CH11231
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Powder Diffraction; Journal Volume: 21; Journal Issue: 2; Related Information: Journal Publication Date: 2006
 Country of Publication:
 United States
 Language:
 English
 Subject:
 36 MATERIALS SCIENCE; ADVANCED LIGHT SOURCE; CAMERAS; DIFFRACTION; MONOCRYSTALS; ORIENTATION; ORIGIN; RESOLUTION; STRAINS; X RADIATION; XRAY DIFFRACTION; strain composite microdiffraction
Citation Formats
Bale, Hrishikesh A., Hanan, Jay C., and Tamura, Nobumichi. 4D XRD for strain in many grains using triangulation. United States: N. p., 2006.
Web. doi:10.1154/1.2219885.
Bale, Hrishikesh A., Hanan, Jay C., & Tamura, Nobumichi. 4D XRD for strain in many grains using triangulation. United States. doi:10.1154/1.2219885.
Bale, Hrishikesh A., Hanan, Jay C., and Tamura, Nobumichi. Sun .
"4D XRD for strain in many grains using triangulation". United States.
doi:10.1154/1.2219885. https://www.osti.gov/servlets/purl/922825.
@article{osti_922825,
title = {4D XRD for strain in many grains using triangulation},
author = {Bale, Hrishikesh A. and Hanan, Jay C. and Tamura, Nobumichi},
abstractNote = {Determination of the strains in a polycrystalline materialusing 4D XRD reveals subgrain and graintograin behavior as a functionof stress. Here 4D XRD involves an experimental procedure usingpolychromatic microbeam Xradiation (microLaue) to characterizepolycrystalline materials in spatial location as well as with increasingstress. The insitu tensile loading experiment measured strain in a modelaluminumsapphire metal matrix composite using the Advanced Light Source,Beamline 7.3.3. MicroLaue resolves individual grains in thepolycrystalline matrix. Results obtained from a list of grains sorted bycrystallographic orientation depict the strain states within and amongindividual grains. Locating the grain positions in the planeperpendicular to the incident beam is trivial. However, determining theexact location of grains within a 3D space is challenging. Determiningthe depth of the grains within the matrix (along the beam direction)involved a triangulation method tracing individual rays that producespots on the CCD back to the point of origin. Triangulation wasexperimentally implemented by simulating a 3D detector capturingmultiple diffraction images while increasing the camera to sampledistance. Hence by observing the intersection of rays from multiple spotsbelonging to the corresponding grain, depth is calculated. Depthresolution is a function of the number of images collected, grain to beamsize ratio, and the pixel resolution of the CCD. The 4DXRD methodprovides grain morphologies, strain behavior of each grain, andinteractions of the matrix grains with each other and the centrallylocated single crystal fiber.},
doi = {10.1154/1.2219885},
journal = {Powder Diffraction},
number = 2,
volume = 21,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 2006},
month = {Sun Dec 31 00:00:00 EST 2006}
}

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