| Al-Ni-Fe系铸态合金中的准晶相 |
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| 引用本文： | 羌建兵,王英敏,王德和,董闯. Al-Ni-Fe系铸态合金中的准晶相[J]. 材料研究学报, 2003, 17(1): 67-73 |
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| 作者姓名： | 羌建兵 王英敏 王德和 董闯 |
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| 作者单位： | 1. 大连理工大学
2. 大连理工大学;大连理工大学三束材料改性国家重点实验室 |
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| 基金项目： | 国家自然科学基金No.50271012 |
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| 摘 要： | 系统研究了Al72.5Fe14.5Ni13和Al71Fe5Ni24铸态合金的相组成，发现其中分别存在D—Al72．6Fel4．6Nil2．8和D'—Al70．5Fe10Nil9．5两种十次准晶，它们各自与AlFe和AlNi二元十次准晶相关．实验结果与三元准晶相图的电子浓度特征吻合，说明三元准晶相图的电子浓度特征对确定三元准晶的理想成分和探索准晶新成分有一定的指导作用．
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| 关 键 词： | Al－Ni－Fe系铸态合金 准晶相 三元相图 电子浓度 铝镍铁合金 |
| 文章编号： | 1005-3093(2003)01-0067-07 |
| 修稿时间： | 2001-12-25 |
Quasicrystals in as-cast Al-Ni-Fe alloys |
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| QIANG Jianbing WANG Yingmin WANG Dehe DONG Chuang. Quasicrystals in as-cast Al-Ni-Fe alloys[J]. Chinese Journal of Materials Research, 2003, 17(1): 67-73 |
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| Authors: | QIANG Jianbing WANG Yingmin WANG Dehe DONG Chuang |
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| Abstract: | A structural investigation of as-cast Al72.5Fe14.5Ni13 and Al71Fe5Ni24 alloys is reported in the present paper. The former alloy mainly consists of two phases: hexagonal Al5FeNi and decagonal quasicrystal D phase and three phases (hexagonal AI3Ni2, orthorhombic Al3Ni and decagonal quasicrystal D' phase) were found in the latter alloy. The two decagonal phases with different measured compositions, D-Al72.6Fe14.6Ni12.8 and D'-AI70.5Fe10Ni19.5, are corresponding to AlFe-based and AINi-based decagonal phase, respectively. This result confirms that the electron concentration feature of ternary quasicrystalline phase diagrams is a useful empirical criterion to search for ideal ternary QC compositions. |
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| Keywords: | fpimdational discipline in materials science quasicrystal valence electron concentration AI-Ni-Fe alloy ternary phase diagram |
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