2D and 3D X-Ray Structural Microscopy Using Submicron-Resolution Laue Microdiffraction

Conference · Wed Nov 10 04:00:00 EST 2010

OSTI ID:1008951

Budai, John D; Yang, Wenge; Larson, Bennett C; Tischler, Jonathan Z; Liu, Wenjun; Ice, Gene E ^[1]

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1. UIUC

We have developed a scanning, polychromatic x-ray microscopy technique with submicron spatial resolution at the Advanced Photon Source. In this technique, white undulator radiation is focused to submicron diameter using elliptical mirrors. Laue diffraction patterns scattered from the sample are collected with an area detector and then analyzed to obtain the local crystal structure, lattice orientation, and strain tensor. These new microdiffraction capabilities have enabled both 2D and 3D structural studies of materials on mesoscopic length-scales of tenths-to-hundreds of microns. For thin samples such as deposited films, 2D structural maps are obtained by step-scanning the area of interest. For example, 2D x-ray microscopy has been applied in studies of the epitaxial growth of oxide films. For bulk samples, a 3D differential-aperture x-ray microscopy technique has been developed that yields the full diffraction information from each submicron volume element. The capabilities of 3D x-ray microscopy are demonstrated here with measurements of grain orientations and grain boundary motion in polycrystalline aluminum during 3D thermal grain growth. X-ray microscopy provides the needed, direct link between the experimentally measured 3D microstructural evolution and the results of theory and modeling of materials processes on mesoscopic length scales.

• Research Organization: Advanced Photon Source (APS), Argonne National Laboratory (ANL), Argonne, IL (US)
• Sponsoring Organization: USDOE
• OSTI ID: 1008951
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
43 PARTICLE ACCELERATORS
ADVANCED PHOTON SOURCE
ALUMINIUM
CRYSTAL STRUCTURE
DIFFRACTION
GRAIN GROWTH
GRAIN ORIENTATION
MICROSCOPY
MIRRORS
NEUTRONS
ORIENTATION
OXIDES
PROBES
RADIATIONS
SCATTERING
SPATIAL RESOLUTION
STRAINS
WIGGLER MAGNETS