Open AccessStudy on Microstructure Evolution and Liquid－Solid Correlation of Pur e Aluminum Melts
Author(s) -
Wang Li,
Hui Li,
Bian Xiufang,
Min Sun,
Xiangfa Liu,
Hongbo Liu,
Kuiying Chen
Publication year - 2000
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.49.45
Subject(s) - microstructure , materials science , molecular dynamics , atom (system on chip) , aluminium , chemical physics , thermodynamics , crystallography , physics , composite material , chemistry , computational chemistry , computer science , embedded system
The molecular dynamics simulations have been performed on microstructure and tra n sfer mechanism of liquid Al. The pair distributed function has been attained at different temperatures and cooling rates by means of tightbinding potential. T he proportions of small atom groups of different types have been analyzed by ado pting bond pair index method. The result indicates that if the cooling rate is l ow crystals will be formed otherwise amorphism will occur under relatively hi gh cooling rate. When the liquid Al forms crystal the bond pairs 1421 1422 play an important role while the pairs 1551 1541 have the close connection with the formation of amorphism.