| Mg-Cu(Ag)-Gd Bulk Metallic Glass Forming Alloy: Phase Selection of Melt Crystallization | |
| Q. Zheng | |
| 2012 | |
| Source Publication | Science of Advanced Materials
 |
| ISSN | 1947-2935 |
| Volume | 4Issue:9Pages:969-977 |
| Abstract | The solidification microstructure of the master alloys (MAs) and slowly cooled alloys (SCAs) for Mg-Cu-Gd ternary system and the best glass former in Mg-Cu-Ag-Gd quaternary system were systematically investigated. the best ternary glass former alloy, Mg61Cu28Gd11, with a critical size (D-c) of 12 mm is correlated with a eutectic reaction L -> Mg2Cu + Mg3CuGd in Mg-Cu-Gd equilibrium phase diagram. And a phase diagram was established for the studied compositions in the Mg-Cu-Gd ternary system. The glass forming ability (GFA) was dramatically improved when Cu is substituted by Ag. In Mg-Cu-Ag-Gd quaternary system, the critical size reached 27 mm for Mg59.5Cu22.9Ag6.6Gd11 and this is the largest D-c for all reported Mg-based bulk metallic glasses (BMGs). The reasons why the Mg59.5Cu22.9Ag6.6Gd11 has an extraordinary glass forming ability was explained from two aspects: stabilization of the liquid and frustration of the competing phase. |
| description.department | [zheng, qiang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [zheng, qiang] china acad ordnance sci, ningbo branch, ningbo 315103, zhejiang, peoples r china.;zheng, q (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china.;qiangzheng616@hotmail.com |
| Keyword | Metallic Glasses Intermetallics Glass Forming Ability Magnesium Alloys Solidification Path Phase Diagrams Ternary-system Structural Model Amorphous-alloys Atomic Packing Critical Size Cu-al Composites Microstructure Thermodynamics Ability |
| URL | 查看原文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/60503 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Q. Zheng. Mg-Cu(Ag)-Gd Bulk Metallic Glass Forming Alloy: Phase Selection of Melt Crystallization[J]. Science of Advanced Materials,2012,4(9):969-977. |
| APA | Q. Zheng.(2012).Mg-Cu(Ag)-Gd Bulk Metallic Glass Forming Alloy: Phase Selection of Melt Crystallization.Science of Advanced Materials,4(9),969-977. |
| MLA | Q. Zheng."Mg-Cu(Ag)-Gd Bulk Metallic Glass Forming Alloy: Phase Selection of Melt Crystallization".Science of Advanced Materials 4.9(2012):969-977. |
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