Dislocation Density Mapping in 3D

Through this proposal, we aim to map the full dislocation density tensor field by recording 3 independent reflections using Dark Field X-ray Microscopy (DFXM). These high-resolution experimental maps will be integrated into state-of-the-art Continuum Dislocation Dynamics (CDD) models to address critical materials science questions. The insights gained will guide the development of improved numerical models and resolves long standing challenges in the understanding of dislocation dynamics.

本研究提案旨在借助暗场X射线显微镜（Dark Field X-ray Microscopy, DFXM）采集3组独立反射信号，完整绘制位错密度张量场的全域分布。上述高分辨率实验测绘结果将被集成至当前最先进的连续位错动力学（Continuum Dislocation Dynamics, CDD）模型中，以解决材料科学领域的关键科学问题。本研究获得的认知将为改进型数值模型的研发提供指导，并解决长期以来对位错动力学理解层面存在的诸多难题。