典型文献
Icosahedral quasicrystal structure of the Mg40Zn55Nd5 phase and its thermodynamic stability
文献摘要：
The quasicrystal phase is beneficial to increasing the strength of magnesium alloys. However, its complicated structure and unclear phase relations impede the design of alloys with good mechanical properties. In this paper, the Mg40Zn55Nd5 icosahedral quasicrystal (I-phase) structure is discovered in an as-cast Mg–58Zn–4Nd alloy by atomic resolution high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). A cloud-like morphology is observed with Mg41.6Zn55.0Nd3.4 composition. The selected area electronic diffrac-tion (SAED) analysis shows that the icosahedral quasicrystal structure has 5-fold, 4-fold, 3-fold, and 2-fold symmetry zone axes. The thermo-dynamic stability of the icosahedral quasicrystal is investigated by differential scanning calorimetry (DSC) in the annealed alloys. When an-nealed above 300℃, the Mg40Zn55Nd5 quasicrystal is found to decompose into a stable ternary phase Mg35Zn60Nd5, a binary phase MgZn, and α-Mg, suggesting that the quasicrystal is a metastable phase in the Mg–Zn–Nd system.
文献关键词：
中图分类号：
作者姓名：
Shuai Zhang;Qianqian Li;Hongcan Chen;Qun Luo;Qian Li
作者机构：
State Key Laboratory of Advanced Special Steels,Shanghai Key Laboratory of Advanced Ferrometallurgy,School of Materials Science and Engineering,Shang-hai University,Shanghai 200444,China;Materials Genome Institute,Shanghai University,Shanghai 200444,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China
文献出处：
引用格式：
[1]Shuai Zhang;Qianqian Li;Hongcan Chen;Qun Luo;Qian Li-.Icosahedral quasicrystal structure of the Mg40Zn55Nd5 phase and its thermodynamic stability)[J].矿物冶金与材料学报,2022(08):1543-1550
A类：
Icosahedral,Mg40Zn55Nd5,icosahedral,58Zn,4Nd,Mg41,6Zn55,0Nd3,nealed,Mg35Zn60Nd5
B类：
quasicrystal,structure,phase,its,thermodynamic,stability,beneficial,increasing,strength,magnesium,alloys,However,complicated,unclear,relations,impede,design,good,mechanical,properties,In,this,paper,discovered,cast,by,atomic,resolution,high,angle,annular,dark,field,scanning,transmission,microscopy,HAADF,STEM,cloud,like,morphology,observed,composition,selected,area,electronic,diffrac,SAED,analysis,shows,that,fold,symmetry,zone,axes,investigated,differential,calorimetry,DSC,annealed,When,above,found,decompose,into,ternary,binary,MgZn,suggesting,metastable,system
AB值：
0.455068
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