Anisotropic strain enhanced hydrogen solubility in bcc metals: the independence on the sign of strain

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Publication Type pre-print
School or College College of Engineering
Department Materials Science & Engineering
Creator Liu, Feng
Other Author Zhou, Hong-Bo; Jin, Shuo; Zhang, Ying; Lu, Guang-Hong
Title Anisotropic strain enhanced hydrogen solubility in bcc metals: the independence on the sign of strain
Date 2012-01-01
Description When an impurity is doped in a solid, it inevitably induces a local stress, tending to expand or contract the lattice. Consequently, strain can be applied to change the solubility of impurity in a solid. Generally, the solubility responds to strain ‘‘monotonically,'' increasing (decreasing) with the tensile (compressive) strain if the impurity induces a compressive stress or vice versa. Using first-principles calculations, however, we discovered that the H solubility can be enhanced by anisotropic strain in some bcc metals, almost independent of the sign of strain. This anomalous behavior is found to be caused by a continuous change of H location induced by anisotropic strain. Our finding suggests a cascading effect of H bubble formation in bcc metals: the H solution leads to H bubble formation that induces anisotropic strain that in turn enhances H solubility to further facilitate bubble growth.
Type Text
Publisher American Physical Society
Volume 109
Issue 13
First Page 135502-1
Last Page 135502-5
Dissertation Institution University of Utah
Language eng
Bibliographic Citation Zhou, H.-B., Jin, S., Zhang, Y., Lu, G.-H., & Liu, F. (2012). Anisotropic strain enhanced hydrogen solubility in bcc metals: the independence on the sign of strain. Physical Review Letters, 109(13), 135502-1-135502-5.
Rights Management (c) American Physical Society http://dx.doi.org/10.1103/PhysRevLett.109.135502
Format Medium application/pdf
Format Extent 977,622 bytes
Identifier uspace,17983
ARK ark:/87278/s63j3xr4
Setname ir_uspace
Date Created 2012-11-13
Date Modified 2021-05-06
ID 708220
Reference URL https://collections.lib.utah.edu/ark:/87278/s63j3xr4
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