|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||Automated Serial Sectioning as a Method to 3D Map Inclusions in Structural Metals
||Veeraraghavan Sundar, Rachel Reed
|On-Site Speaker (Planned)
The characterization of metallic and nonmetallic inclusions (MI/NMIs) for quantity, size, and shape distributions is of great interest for prediction of the mechanical properties as well as quality control of structural metals. Automated serial sectioning is a practical method of characterizing such MI/NMI distributions accurately in statistically relevant volumes of materials. Problems such as quantifying spheroidal graphite in cast iron, failure inducing inclusions creating white etching regions in M50 steel, as well as NMIs in Inconel and Al 6xxx series alloys were investigated. Critical parameters such as the difference between size distributions as well as morphologies in inclusions were comparable between samples. For example, of the two Al6xxx samples investigated, one had a higher percentage of fine (< 10 micron) inclusions, and a lower percentage of smaller aspect ratio inclusions (alpha AlFeSi, aspect ratio < 5) than the other. This has an impact on mechanical properties.