Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 759, Issue -, Pages 59-64Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2019.05.019
Keywords
Metallic glass; Rejuvenation; Cryogenic cycling; Free volume
Categories
Funding
- Huazhong University of Science and Technology [3004110125, 3004110142]
Ask authors/readers for more resources
The rejuvenation behavior of a Pd-based bulk metallic glass (BMG) upon deep cryogenic cycling treatment (DCT) has been investigated in the present study. Unlike the obvious rejuvenation phenomenon of Zr-based BMGs, unconspicuous rejuvenation can be observed for the Pd-based samples. The enthalpy of relaxation, hardness and mechanical properties maintained almost unchanged after thermal cycling. The free volume in Pd-based BMG is very difficult to be induced by DCT or eliminated by relaxation annealing, which may relate with the high rigidity of cage structures and subsequently high stability of free volume. In addition, once the free volume is eliminated by annealing for Zr-based BMG, similar unconspicuous rejuvenation upon DCT occurs, which indicates the importance of free volume in the rejuvenation mechanism. These findings provide a deeper understanding between the intrinsic amorphous structures and cryogenic thermal cycling induced rejuvenation behaviors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available