High-resolution digital image correlation was employed to analyze the occurrence of slip transfer across grain boundaries in pure Ti. The microstructure was characterized in 3D through diffraction contrast tomography and electron backscatter diffraction. The prismatic slip activity was captured in the shear strain maps at different strains, and the grain boundaries were classified according to the occurrence/absence of slip transfer. Different geometrical slip transfer criteria were tested, and, in general, the slip transfer likelihood increased when the slip systems across the boundary were well-aligned. Nevertheless, a detailed analysis of selected grain boundaries revealed that slip transfer could be triggered or impeded depending on the local stresses acting on the neighborhood, regardless of the alignment between the slip systems. The microstructural and deformation patterns where the geometrical criteria are not enough to predict slip transfer are assessed.

中文翻译：

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通过衍射对比断层扫描和高分辨率数字图像相关分析钛中跨晶界的滑移传递：当几何标准不充分时

采用高分辨率数字图像相关性来分析纯钛中跨晶界滑移传递的发生。通过衍射对比断层扫描和电子背散射衍射对微观结构进行 3D 表征。在不同应变下的剪切应变图中捕获了棱柱滑移活动，并根据滑移转移的发生/不存在对晶界进行分类。测试了不同的几何滑移传递标准，一般来说，当边界上的滑移系统对齐良好时，滑移传递的可能性会增加。然而，对选定晶界的详细分析表明，无论滑移系统之间的排列如何，滑移传递都可能根据作用在邻域上的局部应力而被触发或阻碍。评估几何标准不足以预测滑移传递的微观结构和变形模式。