Abstract
The volume of a quenched glassy alloy is a variable of cooling rates during the amorphization. Hence a change in the volume caused by the structural relaxation can be regarded as a degree of amorphousness. The density of Zr 50Cu40Al10 bulk glassy alloys (BGAs) increases linearly with the annealing temperature below the glass-transition temperature (Tg). With increasing the annealing temperature, the tensile strength and Vickers hardness show constant values, whereas the Young's moduli and Charpy impact values become larger and smaller, respectively. Especially, Charpy impact values of Zr-Cu-Al BGAs have a linear relationship with the relative value of excessive free volume, which correspond to the volume-change ratio caused by the full structural relaxation.
Original language | English |
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Pages (from-to) | 2755-2761 |
Number of pages | 7 |
Journal | Materials Transactions |
Volume | 46 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2005 Dec |
Keywords
- Bulk glassy alloy
- Charpy impact test
- Cold rolling
- Shear band
- Structural relaxation
- Tensile strength
- ZrCuAl
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering