Electronic Resource
Advances in 6d diffraction contrast tomography
| العنوان: | Advances in 6d diffraction contrast tomography |
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| المؤلفون: | Viganò, N.R. (Nicola), Ludwig, W. (Wolfgang) |
| المصدر: | Journal of Instrumentation vol. 13 no. 4 |
| بيانات النشر: | 2018-04-11 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The ability to measure 3D orientation fields and to determine grain boundary character plays a key role in understanding many material science processes, including: crack formation and propagation, grain coarsening, and corrosion processes. X-ray diffraction imaging techniques offer the ability to retrieve such information in a non-destructive manner. Among them, Diffraction Contrast Tomography (DCT) is a monochromatic beam, near-field technique, that uses an extended beam and offers fast mapping of 3D sample volumes. It was previously shown that the six-dimensional extension of DCT can be applied to moderately deformed samples (≤ 5% total strain), made from materials that exhibit low levels of elastic deformation of the unit cell (≤ 1%). In this article, we improved over the previously proposed 6D-DCT reconstruction method, through the introduction of both a more advanced forward model and reconstruction algorithm. The results obtained with the proposed improvements are compared against the reconstructions previously published in [1], using Electron Backscatter Diffraction (EBSD) measurements as a reference. The result was a noticeably higher quality reconstruction of the grain boundary positions and local orientation fields. The achieved reconstruction quality, together with the low acquisition times, render DCT a valuable tool for the stop-motion study of polycrystalline microstructures, evolving as a function of applied strain or thermal annealing treatments, for selected materials. |
| مصطلحات الفهرس: | Computerized Tomography (CT), Computed Radiography (CR), Data analysis, Data processing methods, Inspection with x-rays, info:eu-repo/semantics/article |
| DOI: | 10.1088.1748-0221.13.04.C04017 |
| URL: | |
| الاتاحة: | Open access content. Open access content |
| ملاحظة: | English |
| Other Numbers: | NLCWI oai:cwi.nl:27712 doi:10.1088/1748-0221/13/04/C04017 1251878327 |
| المصدر المساهم: | CWI REPOSITORY. From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1251878327 |
| قاعدة البيانات: | OAIster |
| DOI: | 10.1088.1748-0221.13.04.C04017 |
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