(1. 大连理工大学 材料科学与工程学院，大连 116024；
2. 大连理工大学 三束材料改性教育部重点实验室，大连 116024)
摘 要: 以最近邻配位多面体为基元描述复杂合金相的结构特征，总结出合金相的常见团簇类型，并建立了合金相的“团簇+连接原子”模型。以此为基础解析准晶和非晶合金为代表的团簇合金的结构与团簇成分式特征，提出复杂合金相成分设计的团簇式方法，并以块体非晶合金和稳定固溶体合金为例说明多组元合金相团簇成分式的建立与运用过程以及团簇基元及连接原子种类与数目的确定原则。前期研究工作表明，基于“团簇+连接原子”模型的团簇成分式方法为多元复杂合金相定量设计提供了新的有效途径。
关键字: “团簇+连接原子”模型；合金成分设计；团簇式；块体非晶合金；固溶体
complex alloys
（1. School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China;
2. Key Laboratory of Materials Modification, Ministry of Education, Dalian University of Technology,
Dalian 116024, China）
Abstract:A “cluster-plus-glue-atom” model for description of the structures of complex metallic alloys was proposed. The model atomic clusters were referred to be as the basic first coordination polyhedra of the structures having the point symmetries of cuboctahedral, trigonal prismatical, Archimedean quadrangular anti-prismatical or icosahedral. The compositions of the atomic clusters were derived from a structure sharing consideration. The glue atoms were viewed to be as an interstitial-like structure component, the nature and the number of which were determined by the structural stability principles. Accordingly, the salient structure and composition features of quasicrystals, bulk metallic glasses and multicomponent solid solution alloys were illustrated with the resultant cluster formula. The present “cluster-plus- glue-atom” model was expected to be applicable for the composition design of complex metallic alloys in a quantitative manner.
Key words: “cluster-plus-glue-atom” model; alloy design; cluster formula; bulk metallic glass; solid solution alloy
