Approximants in annealed IQC(Icosahedral Quasicrystal)-DQC(Decagonal Quasicrystal) pseudo-binary alloys

作     者：雷奕 J.M.Dubois M.Calvo-Dahlborg 黑祖昆 P.Weisbecker 董闯 

作者机构：State Key Laboratory for Materials Modification LSG2M CNRS-UMR7584 Institute of Material & Technology 

出 版 物：《中国有色金属学会会刊：英文版》 (Transactions of Nonferrous Metals Society of China)

年 卷 期：2003年第13卷第6期

页      面：1360-1366页

核心收录：

学科分类：07[理学] 0806[工学-冶金工程] 070205[理学-凝聚态物理] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0813[工学-建筑学] 0703[理学-化学] 0814[工学-土木工程] 0702[理学-物理学] 

基　　金：Project (PRAMX 99/0 4)supportedbyFrench ChineseAssociationforScientificandTechnologicResearch(AFCRST) FrenchChineseAdvancedResearchProgramonMaterials project(5 0 0 710 13 )supportedbytheNationalNaturalScienceFoundationofChina 

主　　题：二元合金 准晶 IQC DQC 近似解 退火 相图 

摘      要：The structure and microstructure of constituent phases in annealed IQC100-xDQCx alloys, made from mixtures of (Al62Cu25.5Fe12.5) icosahedral quasicrystal （IQC） and (Al70Co15Ni15) decagonal quasicrystal （DQC）, were studied by X-ray diffractometry（XRD）, scanning electron microscopy （SEM）, and energy-dispersive X-ray spectroscopy （EDAX）. These constituent phases are mostly approximants: λ, β and τ3. In addition, an Al-Cu-Co DQC phase is observed in (IQC80DQC20) alloy. The nature of these approximants and their relationship with the quasicrystals（QCs） are discussed; and the evolution of these phases is interpreted by the shifting of their e/a-constant lines in the Al-（Cu, Ni）-（Fe, Co） pseudo-ternary phase diagrams.