稀土基金属玻璃及其共晶成分的双团簇式解析  

Dual-Cluster Formulas Analysis of Rare-Earth-Based Metallic Glasses and Their Eutectic Compositions

作　　者：王硕 陈季香 窦月辉 李仕龙 Wang Shuo;Chen Jixiang;Dou Yuehui;Li Shilong(School of Science,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]大连海事大学理学院,辽宁大连116026

出　　处：《中国稀土学报》2024年第6期1140-1145,I0003,共7页Journal of the Chinese Society of Rare Earths

基　　金：中央高校基本科研业务费科技创新团队项目(3132014327)资助。

摘　　要：金属玻璃的形成与共晶形成密切相关,且金属玻璃和晶体之间存在着结构上的遗传性。本文通过团簇式即团簇加连接原子模型将金属玻璃和共晶相关合金相联系起来,建立了稀土基金属玻璃成分设计的流程。利用本课题组提出的理想金属玻璃双团簇式模型:[(主团簇)1+(主团簇)2](连接原子)2,4,6进行解析,这里的两个主团簇来自于共晶相关相。主团簇的筛选准则首先是基于空间利用率定义密堆团簇,然后选取具有最高密堆率的团簇作为主团簇,根据双团簇式模型构造出共晶点及金属玻璃的双团簇式。以Cu-Y,Al-Ce和Al-Y体系为例,利用双团簇式模型解释了金属玻璃及其共晶成分,与实验值非常吻合。最终提出了利用双团簇式模型进行稀土基金属玻璃成分设计的具体步骤。Eutectic formation is closely related to the formation of metallic glass,and there exists structural inheritance between metallic glasses and crystals.This article proposes a detailed process for designing RE-based metallic glasses through a cluster model that links them to eutectic-related alloys.Taking the ideal metal glass dual cluster model proposed by our research group earlier:[(principal cluster)1+(principal cluster)2](glue atoms)2,4,6 for analysis,the two principal clusters are derived from eutectic-related phases.The screening criteria for principal clusters are based on the definition of dense clusters and space utilization.The cluster with the highest density was then chosen as the principal cluster.Eutectic points and metallic glasses are constructed based on the dual-cluster formulas model.Using the Cu-Y,Al-Ce,and Al-Y systems as examples,the dual-cluster formulas model explains the compositions of metallic glass and eutectic,and the results align with experimental values.Finally,we propose detailed steps for designing rare-earth-based metal glasses utilizing the dual-cluster formulas model.

关 键 词：稀土基金属玻璃 共晶 主团簇 双团簇式模型 

分 类 号：TG139.8[一般工业技术—材料科学与工程]