Mechanism,condition and characteristics for the formation of the network structure in Zr-Al-Ni-Cu bulk metallic glasses  

作　　者：AN WeiKe DING DaWei CAI AnHui ZHOU GuoJun LUO Yun LI JiangHong PENG YongYi 

机构地区：[1]College of Mechanical Engineering,Hunan Institute of Science and Technology [2]Institute of Physics,Chinese Academy of Sciences [3]State Key Laboratory of Powder Metallurgy,Central South University [4]School of Physics and Electronics,Central South University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2015年第6期103-108,共6页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.50874045);Key Construction Discipline of Hunan Province

摘　　要：Mechanism,condition and characteristics for the formation of the network structure in a group of Zr-Al-Ni-Cu bulk metallic glasses(BMGs) were investigated.The results show that the constituent segregation and/or the symplastic growth would be the mechanisms for the formation of the cell structure in the present Zr-Al-Ni-Cu BMGs.The cell structure can be easily obtained for the glass forming alloys whose compositions locate nearby the eutectic point.The shorter the distance is from the eutectic point,the larger the cell and the thicker the cell wall of the network structure will be.The present investigation would provide useful information for the development of the BMG with the network structure.Mechanism, condition and characteristics for the formation of the network structure in a group of Zr-Al-Ni-Cu bulk metallic glasses （BMGs） were investigated. The results show that the constituent segregation and/or the symplastic growth would be the mechanisms for the formation of the cell structure in the present Zr-Al-Ni-Cu BMGs. The cell structure can be easily obtained for the glass forming alloys whose compositions locate nearby the eutectic point. The shorter the distance is from the eutectic point, the larger the cell and the thicker the cell wall of the network structure will be. The present investigation would provide useful information for the development of the BMG with the network structure.

关 键 词：Zr-Al-Ni-Cu bulk metallic glass network structure MECHANISM CHARACTERISTICS 

分 类 号：TG139.8[一般工业技术—材料科学与工程]