Voxel-based strain tensors from near-field High Energy Diffraction Microscopy
High energy X-ray diffraction microscopy is one of several techniques that use spatially resolved diffraction to nondestructively map crystal unit cell orientations in three dimensions inside bulk polycrystalline samples. The near-field variant of the technique (nf-HEDM) yields grain shapes, grain boundary character information, and intra-granular orientation variations. Here, we demonstrate, through analysis of simulated and physical data sets, the extension nf-HEDM to include mapping of heterogeneous intra-granular strain states with spatial resolution on the micron scale. Sensitivity to all strain tensor components is < 5 × 10**-4 . The GPU assisted implementation of an optimization algorithm is described.
- Research Organization:
- Carnegie Mellon Univ., Pittsburgh, PA (United States); Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- Grant/Contract Number:
- SC0019096; AC02-06CH11357
- OSTI ID:
- 1769538
- Alternate ID(s):
- OSTI ID: 1650350; OSTI ID: 1650353
- Report Number(s):
- DOE-CMU-0019096; S1359028620300504; 100852; PII: S1359028620300504
- Journal Information:
- Current Opinion in Solid State and Materials Science, Journal Name: Current Opinion in Solid State and Materials Science Vol. 24 Journal Issue: 4; ISSN 1359-0286
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United Kingdom
- Language:
- English
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