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arXiv · 2305.16454

Modeling of experimentally observed topological defects inside bulk polycrystals

Siddharth Singh·He Liu·Rajat Arora·Robert M. Suter·Amit Acharya
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Abstract

A rigorous methodology is developed for computing elastic fields generated by experimentally observed defect structures within grains in a polycrystal that has undergone tensile extension. An example application is made using a near-field High Energy X-ray Diffraction Microscope measurement of a zirconium sample that underwent $13.6\%$ tensile extension from an initially well-annealed state. (Sub)grain boundary features are identified with apparent disclination line defects in them. The elastic fields of these features identified from the experiment are calculated.

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Siddharth Singh, He Liu, Rajat Arora, Robert M. Suter, Amit Acharya. 2023-05-25. Modeling of experimentally observed topological defects inside bulk polycrystals. https://arxiv.org/abs/2305.16454

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