Abstract
Bulk metallic glass was subjected to extreme deformation conditions during machining operation. The flash temperature, oxidation and crystallization within chips from a Zr-based bulk metallic glass were investigated. A near-infrared spectrometer was used to capture the light emission from the tool-chip interface allowing the calculation of the temperature. Very high temperatures in the 2400-2700 K range were observed and associated with the light emission and oxidation in the chips. X-ray diffraction analysis revealed oxidation of chips machined at high cutting speeds. Optical micrographs of polished and etched chip cross-sections showed a dendritic pattern due to crystallization. Using a field emission gun SEM, amorphous and crystalline regions were analyzed. This study demonstrates the oxidation and crystallization of bulk metallic glass during machining. © 2003 Elsevier Ltd. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 195-204 |
| Journal | Intermetallics |
| Volume | 12 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2004 |
| Externally published | Yes |
Research Keywords
- B. Metallic glasses
- B. Oxidation
- C. Machining
- F. Scanning
- F. X-ray diffraction
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