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1 2023

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Grain size measurement using a semi-automatic calculation tool

Mernache Fatah, Sehisseh Abdelaziz, Amrane Amina, Hadji Said, Melhani Yasmine, Grine Mohamed, Messai Lakhdar

Computer Methods in Materials Science

2023

Vol. 23, No. 1

27--34

This paper focuses on the development of a semi-automatic calculation tool to measure the Mean Linear Intercept (MLI) grain size of ceramics and other materials. The calculation tool was first verified and validated by using a certified micro-ruler and literature microstructures. It was then used to investigate the grain growth of UO2 pellets elaborated under different conditions. The tool offers the advantage of accuracy as well as the ability to quantify microstructures obtained with poor image quality. The estimated measurement errors were found to be less than 1 μm. The developed tool, mainly for the purpose of time-saving, allowed us to follow the microstructure (grain size) evolution of the elaborated UO2 fuel with different additives.