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基于连续切片的金相照片,采用数字化处理技术对半固态7075铝合金的组织进行了三维重构。首先对再结晶重熔法制备的半固态7075铝合金进行分层制样和二维金相组织采集;然后经过图像定位、对齐、二值化、多层堆叠等数字化处理,进行三维组织重构,从而完成从二维信息到三维信息的转换,实现了显微组织三维可视化表征与三维观测。通过三维组织重构发现,所制备的半固态7075铝合金微观结构为固相颗粒状晶粒间隙中填充连通或孤立液相。用三维组织重构可以很方便地获取组织的空间结构特征,使组织表征更为准确和具体。
Based on the continuous sliced metallographic photographs, the microstructure of semi-solid 7075 aluminum alloy was three-dimensionally reconstructed by digital processing technology. Firstly, the semi-solid 7075 aluminum alloy prepared by the recrystallization and remelting method was layered and two-dimensional metallographic structure was collected. Then the three-dimensional tissue structure was reconstructed by digitizing the image, aligning, binarizing and multi-layer stacking , Thus completing the conversion from two-dimensional information to three-dimensional information and realizing the three-dimensional visualization and three-dimensional observation of the microstructure. Through three-dimensional tissue reconstruction found that the prepared semi-solid 7075 aluminum alloy microstructure for the solid-phase granular grain filled gap filled or isolated liquid phase. With the three-dimensional tissue reconstruction can easily obtain the spatial structure of the organization features, so that the organization more accurate and specific characterization.