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Atomic-scale investigation of microstructures by 3D atom-probe microscopy

机译:通过3D原子探针显微镜对微观结构进行原子级研究

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摘要

The three-dimensional atom-probe is the only analytical microscope able to map out the 3D distribution of chemical species at the atomic scale. Combined with a field ion microscope, 3D atom probe is particularly well adapted to the investigation of the fine-scale features of the microstructure of metallic alloys. 3D atom probe makes it possible to measure quantitatively the composition in a small region that can be selected arbitrarily in the reconstructed volume. This way, the composition of small precipitates or that of the surrounding solid solution, or even that of a thin layer close to interfaces can be measured. Potential of this new generation of analytical microscope is illustrated through examples (segregation of boron to planar faults in FeAl and superalloys, precipitation and ordering...).
机译:三维原子探针是唯一能够在原子尺度上绘制化学物种3D分布图的分析显微镜。 3D原子探针与现场离子显微镜相结合,特别适合研究金属合金微观结构的精细特征。 3D原子探针可以定量测量在重建体积中可以任意选择的小区域中的成分。这样,可以测量出小沉淀物的组成或周围固溶体的组成,甚至是靠近界面的薄层​​的组成。举例说明了这种新一代分析显微镜的潜力(硼在FeAl和高温合金中的平面缺陷中的偏析,析出和有序性...)。

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