Inter- and intragranular delta phase quantitative characterization in Inconel 718 by means of image analysis.
作者： N. VANDERESSE , M. ANDERSON , F. BRIDIER , P. BOCHER
DOI: 10.1111/JMI.12317
关键词: Phase (waves) 、 Orientation (computer vision) 、 Microstructure 、 Structure tensor 、 Biological system 、 Characterization (materials science) 、 Brightness 、 Inconel 、 Image processing 、 Metallurgy 、 Materials science
摘要: This paper describes an image processing method for discriminating the inter- and intragranular delta phase precipitates in Inconel 718 (IN 718). The successive practical operations motivations of their choices are presented detail. was applied to IN specimens heat treated with different parameters produce microstructures containing various amounts both types precipitates. They were characterized by electron microscopy backscattered imaging. main difficulty arose from fact that brightness distributions partially overlap. Additional information on morphology spatial distribution had be exploited order differentiate them. shape orientation evaluated using structure tensor, operator quantifies directionality intensity image. distance between parallel also used as additional property identify clusters
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