| High glass-forming ability correlated with fragility of Mg-Cu(Ag)-Gd alloys |
| Q. Zheng; J. Xu; E. Ma
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| 2007
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| 发表期刊 | Journal of Applied Physics
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| ISSN | 0021-8979
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| 卷号 | 102期号:11 |
| 摘要 | We report bulk metallic glasses with critical diameter (D(c)) in the 20-27 mm range over a relatively wide composition range in the Mg-Cu-Ag-Gd quaternary system. Such an extraordinary glass-forming ability is correlated with the relatively strong liquid behavior of these alloys in terms of Angell's [Science 267, 1924 (1995)] fragility concept. The relaxation time of the ternary Mg(61)Cu(28)Gd(11) and quaternary Mg(59.5)Cu(22.9)Ag(6.6)Gd(11) alloys was measured. In terms of the fragility parameter D(*), the Mg(59.5)Cu(22.9)Ag(6.6)Gd(11) alloy with a critical diameter of 27 mm under copper mold casting has a D(*) of 25, higher than all the bulk metallic glass-forming alloys reported so far. The implications of these findings are discussed. (c) 2007 American Institute of Physics. |
| 部门归属 | [zheng, qiang; xu, jian] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [ma, evan] johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa.;xu, j (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;jianxu@imr.ac.cn
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| 关键词 | Bulk-metallic-glass
Medium-range Order
Mg-cu-y
Supercooled Liquids
Thermal-stability
Viscous-flow
Cooling Rate
Crystallization
Viscosity
Temperature
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| URL | 查看原文
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| WOS记录号 | WOS:000251678800042
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/34086
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
Q. Zheng,J. Xu,E. Ma. High glass-forming ability correlated with fragility of Mg-Cu(Ag)-Gd alloys[J]. Journal of Applied Physics,2007,102(11).
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| APA |
Q. Zheng,J. Xu,&E. Ma.(2007).High glass-forming ability correlated with fragility of Mg-Cu(Ag)-Gd alloys.Journal of Applied Physics,102(11).
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| MLA |
Q. Zheng,et al."High glass-forming ability correlated with fragility of Mg-Cu(Ag)-Gd alloys".Journal of Applied Physics 102.11(2007).
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