Open AccessA STUDY OF DEEP UNDERCOOLING FOR Al-Cu-Fe ICOSAHEDRAL QUASICRYSTAL
Author(s) -
陈立凡,
陈熙琛
Publication year - 1996
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.45.169
Subject(s) - quasicrystal , supercooling , materials science , alloy , icosahedral symmetry , superheating , nucleation , melting point , ball (mathematics) , phase (matter) , crystallization , metallurgy , thermodynamics , crystallography , composite material , geometry , chemistry , physics , mathematics , organic chemistry
This work was undertaken to study deep underccoling of Al65Cu20Fe15 alloy melt in Al- Cu - Fe system by cyclic superheating and cooling method. By means of the denucleating technique, Al65Cu20Fe15 alloy melt has been undercooled to 98 K under its melting point, and Al - Cu - Fe icosahedral quasicrystalline ball of 6 mm in diameter was produced. Moreover,the first phase to nucleate will change with the degree of underccoling in alloy melt. It was confirmed that quasicrystal forming ability can be enhanced by increasing the level of denu-cleating in Al65Cu20Fe15 alloy.