Reconstruction and Quantitative Characterization of Multiphase, Multiscale Three-Dimensional Microstructure of a Cast Al-Si Base Alloy
Reconstruction and Quantitative Characterization of Multiphase, Multiscale Three-Dimensional Microstructure of a Cast Al-Si Base Alloy
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DOI：
10.1007/s11663-009-9291-6
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发表时间：
2009-08
期刊：
影响因子：
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通讯作者：
H. Singh;A. Gokhale;Y. Mao;A. Tewari;A. Sachdev
中科院分区：
文献类型：
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作者：
H. Singh;A. Gokhale;Y. Mao;A. Tewari;A. Sachdev
连续切片技术用于不透明材料的三维（3D）微结构的重建是众所周知的。近年来，还开发了用于使用蒙太奇连续切片和机器人辅助的蒙太奇连续切片的自动采集来重建3D微结构的高保真、大体积片段的技术。本文报道了一种永久模铸未改性Al-12 wt % Si-1 wt % Ni基合金的多相、多尺度3D显微结构的重建，该合金含有共晶Si片晶、粗的初级多面体Si颗粒、富Fe脚本金属间化合物颗粒和孔隙。这些成分被分割，重建，渲染，并在三维特征。估计的3D微观结构属性包括共晶片厚度的分布;共晶Si片的平均体积、平均表面积和平均厚度;多面体初晶Si颗粒的平均体积和平均表面积;以及多面体初晶Si颗粒上的面、边缘和拐角的平均数量。
The serial sectioning technique is well known for the reconstruction of three-dimensional (3D) microstructures of opaque materials. In recent years, techniques also have been developed for the reconstruction of high-fidelity, large-volume segments of 3D microstructures that use montage serial sections and robot-assisted automated acquisitions of montage serial sections. This article reports the reconstruction of the multiphase, multiscale 3D microstructure of a permanent mold cast unmodified Al-12 wt pct Si-1 wt pct Ni base alloy that contains eutectic Si platelets, coarse primary polyhedral Si particles, Fe-rich script intermetallic particles, and pores. These constituents are segmented, reconstructed, rendered, and characterized in three dimensions. The estimated 3D microstrucutral attributes include the distribution of eutectic platelet thickness; the mean volume, mean surface area, and mean thickness of the eutectic Si platelets; the mean volume and the mean surface area of the polyhedral primary Si particles; and the mean number of faces, edges, and corners on the polyhedral primary Si particles.