| Pressure-induced amorphous-to-amorphous configuration change in Ca-Al metallic glasses. | |
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MedLine Citation:
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PMID: 22530094 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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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 Ca(80)Al(20), Ca(72.7)Al(27.3), and Ca(66.4)Al(33.6) MGs, respectively, whereas no clear change has been detected in the Ca(50)Al(50) 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. |
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Authors:
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H B Lou; Y K Fang; Q S Zeng; Y H Lu; X D Wang; Q P Cao; K Yang; X H Yu; L Zheng; Y D Zhao; W S Chu; T D Hu; Z Y Wu; R Ahuja; J Z Jiang |
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Publication Detail:
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Type: Journal Article Date: 2012-04-23 |
Journal Detail:
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Title: Scientific reports Volume: 2 ISSN: 2045-2322 ISO Abbreviation: Sci Rep Publication Date: 2012 |
Date Detail:
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Created Date: 2012-04-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101563288 Medline TA: Sci Rep Country: England |
Other Details:
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Languages: eng Pagination: 376 Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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