Al-Cu-Ni-Fe四元体系中的准晶  

QUASICRYSTALS IN Al-Cu-Ni-Fe QUATERNARY SYSTEM

作　　者：姜楠[1] 王清[1] 董闯[1] 

机构地区：[1]大连理工大学三束材料改性国家重点实验室,大连116024

出　　处：《金属学报》2007年第4期374-378,共5页Acta Metallurgica Sinica

基　　金：国家自然科学基金50401020和50671018

摘　　要：铝基稳定准晶存在于三元体系中,利用团簇线判据分析可知,准晶的基础结构只需三个组元,为了进一步确认是否存在四元准晶,以等电子浓度和等原子尺寸判据作为指导,分析了Al-Cu-Ni-Fe四元系中的合金相成分规律,发现三元准晶并没有向四元过渡的倾向,从而验证了团簇线判据的判断,即在该体系不存在真正意义上的四元准晶．Al-based stable quasicrystals exist only in ternary alloy systems. According to the cluster line rule, these quasicrystals require three constituent elements. For the objective of determining if there is any quaternary quasicrystal, the electron concentration and atomic size constant criteria were used to analyze the alloy phase evolution in the Al-Cu-Ni-Fe quaternary system. It is found that there is no evidence of any quaternary quasicrystal, which confirmed the conclusions of the cluster line rule, i.e.. three elements are sufficient to form a stable Al-based quasicrvstal.

关 键 词：准晶 四元体系 团簇线 等电子浓度 等原子尺寸 

分 类 号：TG115.22[金属学及工艺—物理冶金]