Document Detail


Pressure-induced amorphous-to-amorphous configuration change in Ca-Al metallic glasses.
MedLine Citation:
PMID:  22530094     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
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.
Authors:
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:
Type:  Journal Article     Date:  2012-04-23
Journal Detail:
Title:  Scientific reports     Volume:  2     ISSN:  2045-2322     ISO Abbreviation:  Sci Rep     Publication Date:  2012  
Date Detail:
Created Date:  2012-04-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101563288     Medline TA:  Sci Rep     Country:  England    
Other Details:
Languages:  eng     Pagination:  376     Citation Subset:  -    
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