Further evidence for room temperature, indentation-induced nanocrystallization in a bulk metallic glass
- Further evidence for room temperature, indentation-induced nanocrystallization in a bulk metallic glass
- 유병길; 최인철; 김용재; 서진유; Ramamurty, Upadrasta; 장재일
- bulk metallic glass; nanoindentation; nanocrystallization
- Issue Date
- Materials science & engineering. A, Structural materials : properties, microstructure and processing
- VOL 545, 225-228
- Room temperature nanoindentation experiments, employing two different pyramidal (Berkovich and
cube-corner) indenters, were performed on a Zr-based bulk metallic glass (BMG) to critically examine
the possibility of indentation-induced nanocrystallization in BMGs. Cross-sectional transmission electron
microscopy images obtained from high angle annular dark field (HAADF) and high resolution (HR) modes
clearly indicate to the occurrence of nanocrystallization. Pronounced nanocrystallite formation in the case
of sharper cube-corner indenter suggests that the structural transformation is favored by the high strains
introduced during nanoindentation.
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