Abstract
The shape recovery property of a sputtered Zr50.3Cu 28.1Al14Ni7.6 (in at.%) thin film metallic glass upon heating is examined. Due to the surface tension-driven viscous flow, the shape of indentation appears to recover to different extents at various temperatures and holding times. It is found that a maximum of 59.8% indentation depth recovery is achieved after annealing within the supercooled liquid region (SCLR). The amount of free volume in the film is found to play a role in the recovery. Atomic force microscopy results reveal a decrease in film roughness to a minimum value within SCLR. To elucidate the experimentally observed shape recovery, a numerical modeling has been employed. It is evident that the depressed region caused by indentation is elevated after annealing.
Original language | English |
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Pages (from-to) | 157-163 |
Number of pages | 7 |
Journal | Journal of Alloys and Compounds |
Volume | 613 |
DOIs | |
State | Published - 15 Nov 2014 |
Keywords
- Annealing
- Indentation depth recovery
- Roughness
- Thin film metallic glass