Abstract
Mg45Y15Cu40 (numbers indicate at.%) metallic glass powders were prepared by the mechanical alloying of pure Mg, Y, and Cu after 10 h of milling. The thermal stability of these Mg45Y15Cu40 amorphous powders was investigated using the differential scanning calorimeter (DSC). Tg, Tx, and ΔTx are 456, 491, and 35 K, respectively. The as-milled Mg45Y15Cu40 powders were then consolidated by vacuum hot pressing into disk compacts with a diameter and thickness of 10 and 1 mm, respectively. This yielded bulk Mg45Y15Cu40 metallic glass with nanocrystalline precipitates homogeneously embedded in a highly dense glassy matrix. The pressure applied during consolidation can enhance thermal stability and prolong the existence of amorphous phase within Mg45Y15Cu40 powders.
Original language | English |
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Pages (from-to) | 1095-1098 |
Number of pages | 4 |
Journal | Materials Science and Engineering: A |
Volume | 449-451 |
DOIs | |
Publication status | Published - Mar 25 2007 |
Externally published | Yes |
Keywords
- Bulk metallic glass
- Mechanical alloying
- Mg-based alloys
- Supercooled liquid region
- Vacuum hot pressing
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- General Materials Science