Document Type
Article
Publication Date
5-7-2013
Journal or Book Title
Journal of Applied Physics
Volume
113
Issue
17
First Page
173514
DOI
10.1063/1.4803851
Abstract
Strain-induced phase transformations (PTs) in a sample under compression, unloading, and reloading in a diamond anvil cell are investigated in detail, by applying finite element method. In contrast to previous studies, the kinetic equation includes the pressure range in which both direct and reverse PTs occur simultaneously. Results are compared to the case when “no transformation” region in the pressure range exists instead, for various values of the kinetic parameters and ratios of the yield strengths of low and high pressure phases. Under unloading (which has never been studied before), surprising plastic flow and reverse PT are found, which were neglected in experiments and change interpretation of experimental results. They are caused both by heterogeneous stress redistribution and transformation-induced plasticity. After reloading, the reverse PT continues followed by intense direct PT. However, PT is less pronounced than after initial compression and geometry of transformed zone changes. In particular, a localized transformed band of a weaker high pressure phase does not reappear in comparison with the initial compression. A number of experimental phenomena are reproduced and interpreted.
Rights
Copyright 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Copyright Owner
American Institute of Physics
Copyright Date
2013
Language
en
File Format
application/pdf
Recommended Citation
Feng, Biao; Zarechnyy, Oleg M.; and Levitas, Valery I., "Strain-induced phase transformations under compression, unloading, and reloading in a diamond anvil cell" (2013). Aerospace Engineering Publications. 30.
https://lib.dr.iastate.edu/aere_pubs/30
Included in
Aerospace Engineering Commons, Materials Science and Engineering Commons, Mechanical Engineering Commons
Comments
The following article appeared in Journal of Applied Physics 113 (2013): 173514 and may be found at http://dx.doi.org/10.1063/1.4803851.