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| Al20Si20Mn20Fe20Ga20中近等原子比高熵十次准晶 | |
| 引用本文： | 马海坤,赵良群,胡执一,苗定豪,李蕊轩,孙土来,田鹤,张甜甜,李花,张勇,何战兵. Al20Si20Mn20Fe20Ga20中近等原子比高熵十次准晶[J]. SCIENCE CHINA Materials, 2021, 0(2): 440-447 |
| 作者姓名： | 马海坤 赵良群 胡执一 苗定豪 李蕊轩 孙土来 田鹤 张甜甜 李花 张勇 何战兵 |
| 作者单位： | State Key Laboratory for Advanced Metals and Materials;Nanostructure Research Centre（NRC）;School of Materials Science and Engineering |
| 基金项目： | the National Natural Science Foundation of China(51871015 and 51471024);the Selfdetermined Project of the State Key Laboratory for Advanced Metals and Materials(2016Z-13)。 |
| 摘 要： | 准晶是结构复杂相,通常以一种合金元素为主要成分.高熵合金含有多种主要合金元素,其晶体结构却往往是比较简单的立方相.作为结构和成分均复杂的高熵准晶却难以在实验上制备和理论上预测,研究人员对其结构特点也知之甚少.因而高熵准晶的制备和结构特性引起了人们的广泛关注.我们报道了一种在Al20Si20Mn20Fe20Ga20甩带样... |
| 关 键 词： | 合金元素 高熵合金 近等原子比 晶体结构 准晶 立方相 |
Near-equiatomic high-entropy decagonal quasicrystal in Al20Si20Mn20Fe20Ga20 |
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| Haikun Ma,Liangqun Zhao,Zhi-Yi Hu,Dinghao Miao,Ruixuan Li,Tulai Sun,He Tian,Tiantian Zhang,Hua Li,Yong Zhang,Zhanbing He. Near-equiatomic high-entropy decagonal quasicrystal in Al20Si20Mn20Fe20Ga20[J]. , 2021, 0(2): 440-447 | |
| Authors: | Haikun Ma Liangqun Zhao Zhi-Yi Hu Dinghao Miao Ruixuan Li Tulai Sun He Tian Tiantian Zhang Hua Li Yong Zhang Zhanbing He |
| Affiliation: | (State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing,100083,China;Nanostructure Research Centre(NRC),State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan,430070,China;School of Materials Science and Engineering,Zhejiang University,Hangzhou,310027,China) |
| Abstract: | High-entropy alloys(HEAs)contain multiple principal alloying elements,but usually with simple crystal structures.Quasicrystals are structurally complex phases,but are generally dominated by only one element.However,nearequiatomic high-entropy quasicrystals have rarely been reported because they are difficult to prepare experimentally and predict theoretically.Therefore,the preparation and crystal structures of near-equiatomic high-entropy quasicrystals have drawn much interest.We report a quinary decagonal quasicrystal(DQC)with near-equiatomic alloying elements in Al20Si20Mn20Fe20Ga20 melt-spun ribbons,which is the first to our knowledge.Meanwhile,the structural features of the DQC are characterized in detail.The configurational entropy of both the alloy and DQC satisfies the entropy-based criterion for HEAs,suggesting a high-entropy DQC.Our findings provide a new strategy to develop high-entropy quasicrystals. |
| Keywords: | high-entropy alloys decagonal quasicrystal high-entropy quasicrystals melt-spun ribbons high-angle annular dark-field scanning transmission electron microscopy |
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