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Pressure-induced amorphous-to-amorphous configuration change in Ca-Al metallic glasses
- Lou, H. B. (author)
- Fang, Y. K. (author)
- Zeng, Q. S. (author)
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- Lu, Y. H. (author)
- Wang, X. D. (author)
- Cao, Q. P. (author)
- Yang, K. (author)
- Yu, X. H. (author)
- Zheng, L. (author)
- Zhao, Y. D. (author)
- Chu, W. S. (author)
- Hu, T. D. (author)
- Wu, Z. Y. (author)
- Jiang, J. Z. (author)
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- (creator_code:org_t)
- 2012-04-23
- 2012
- English.
- In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 2, s. 376-
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Pressure-induced amorphous-to-amorphous configuration changes in Ca-Al metallic glasses (MGs) were studied by performing in-situ room-temperature high-pressure x-ray diffraction up to about 40 GPa. Changes in compressibility at about 18 GPa, 15.5 GPa and 7.5 GPa during compression are detected in Ca80Al20, Ca72.7Al27.3, and Ca66.4Al33.6 MGs, respectively, whereas no clear change has been detected in the Ca50Al50 MG. The transfer of s electrons into d orbitals under pressure, reported for the pressure-induced phase transformations in pure polycrystalline Ca, is suggested to explain the observation of an amorphous-to-amorphous configuration change in this Ca-Al MG system. Results presented here show that the pressure induced amorphous-to-amorphous configuration is not limited to f electron-containing MGs.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Absorption Fine-Structure
- Phase
- Behavior
- Calcium
- Liquid
- Transition
- Water
- Order
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Lou, H. B.
- Fang, Y. K.
- Zeng, Q. S.
- Lu, Y. H.
- Wang, X. D.
- Cao, Q. P.
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- Yang, K.
- Yu, X. H.
- Zheng, L.
- Zhao, Y. D.
- Chu, W. S.
- Hu, T. D.
- Wu, Z. Y.
- Ahuja, Rajeev
- Jiang, J. Z.
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- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- By the university
- Royal Institute of Technology
- Uppsala University
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