Abstract
The effective characterization of the particle distribution in SiCp/Al composites is performed by ultrasonic imaging. The required corrections and processing of ultrasonic signals for 3D reconstructions are developed. The spatial distribution of the SiCp particles and their aggregation are obtained and the reliability of the imaging results is verified by metallography. The correlation of ultrasonic attenuation and velocity to the SiCp content are analyzed. For the quantitative analysis of the SiCp particle distribution, the velocity imaging method is more accurate than the attenuation method. The resulting 3D ultrasonic imaging method is a suitable tool for the characterization of SiCp particle aggregations in Al matrix.
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