| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1610645 | Journal of Alloys and Compounds | 2014 | 7 Pages |
Abstract
The shape recovery property of a sputtered Zr50.3Cu28.1Al14Ni7.6 (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.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Alemu Tesfaye Negussie, Wahyu Diyatmika, J.P. Chu, Y.L. Shen, J.S.C. Jang, C.H. Hsueh,