arXiv Machine Learning By Benjamin Udofia, Nicolas Bertin, Markus Stricker

Inferring Dislocation Microstructures from X-ray Diffraction via Cross-Modal Contrastive Learning

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The paper presents a cross‑modal learning framework that predicts three‑dimensional dislocation density fields directly from X‑ray diffraction data. By pairing simulated dislocation density fields with virtual diffraction patterns and embedding them into a shared 2‑D latent space via contrastive learning, the authors achieve strong alignment between structural and diffraction representations. Experiments show that model performance improves rapidly with dataset size, reaching near‑saturation with about 500 representative observations out of 10,000, and the predicted structures capture the dominant spatial features of the underlying microstructures.

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