Calorimetric study of beta-relaxation in an amorphous alloy: An experimental technique for measuring the activation energy for shear transformation
- Authors
- Lee, Jae-Chul
- Issue Date
- 1월-2014
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Intermetallics, miscellaneous; Glasses, metallic; Rapid solidification processing; Microstructure
- Citation
- INTERMETALLICS, v.44, pp.116 - 120
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERMETALLICS
- Volume
- 44
- Start Page
- 116
- End Page
- 120
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/99750
- DOI
- 10.1016/j.intermet.2013.09.002
- ISSN
- 0966-9795
- Abstract
- When loaded at cryogenic temperature under stresses below the global yield, an amorphous alloy revealed two clearly distinguishable exothermic events during heating in calorimetric experiments. These exotherms, commonly known as the alpha- and beta-relaxations, were attributed to the annealing out of two different local structures with different structural stability, presumably free volume and shear transformation zone (STZ). In this study, we introduced a simple and reliable experimental technique, which enables the evaluation of the activation energy corresponding to the beta-relaxation, E-beta. Based on experimental evidence and comparison with earlier studies, it is presumed that E-beta is directly related to the potential energy barrier to shear transformation. (C) 2013 Published by Elsevier Ltd.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.