Ceramics CMRG Meeting

Presenter: Jonathan Ligda (ARL)

Title: Investigating the on-set of amorphization in single crystal boron carbide.

It is still unclear what initiates the formation of amorphous bands in boron

carbide. Studies that have looked at the microstructure of these bands have

done so on material that experienced intense, complicated stress states.

This makes it difficult to identify the initial formation of the amorphous

bands. For this work, spherical nanoindentation to different maximum load

levels was performed on single crystal boron carbide to attempt and delay

the formation of amorphous bands. The indents were then analyzed with raman

spectroscopy and transmission electron microscopy to observe any

amorphization along with the evolution of the microstructure.

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