Methods have been developed using light optical microscopes to classify steels by counting and measuring the inclusions present. However this requires time and expertise limits the minimum inclusion size and lacks chemical data.
This demand is best addressed with SEM equipped with EDS and dedicated particle analysis software. The use of SEM and EDS adds further precision as morphology can be more precisely determined (micro or nano-scale) and chemical information is available
AZtecSteel is an automated package developed specifically for the analysis and classification of steel inclusions.
It automatically locates and analyses morphology and composition of inclusions, classifying and reporting results to a choice of international standards
Here is an inclusion analysis in steel, composition and morphology are measured in real time. The images on the right show that aluminium and Titanium oxides are forming in the core of inclusions and are enclosed by mechanically weaker phases. EDS exposes the internal variation and this information can be used to define inclusion behaviour. The size of the inclusions is sub-micro which is difficult to be observed with light microscope.
The fast real time analysis makes it possible to be an efficient online quality control.
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