| Cluster line criterion and Cu-Zr-Al bulk metallic glass formation | |
| Q. Wang; C. Dong; J. B. Qiang; Y. M. Wang | |
| 2007 | |
| Source Publication | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| ISSN | 0921-5093 |
| Volume | 449Pages:18-23 |
| Abstract | The cluster line approach is presented and applied for searching the optimum glass-forming composition in the Cu-Zr-Al system. Three cluster selection rules are proposed: topologically dense packing (atomic size-related), chemical short-range order as evaluated by dissimilar atomic pairs, and composition distance to deep eutectics. Three Cu-Zr clusters Cu8Zr5, Cu6Zr5 and Cu5Zr6 satisfy all the three rules and are selected to construct cluster lines. The bulk metallic glass-forming range in the Cu-Zr-Al ternary system is thus determined. It is found that the thermal stabilities and glass-forming abilities of the bulk metallic glasses manifest monotonously increased tendencies with the increased Al content. The optimum Cu-rich and Zr-rich bulk metallic glass compositions are Cu-58.1,Zr35.9Al6 and Cu39.7Zr47.1Al13.2 (number indicate at.%) and they are, respectively, located along the Cu61.8Zr32.2Al and Cu45.7Zr54.3-Al cluster lines, where the deep eutectics exactly correspond to the dense packing clusters Cu8Zr5 and Cu5Zr6. The characteristic parameters (glass transition temperature T-g and melting temperature T) of Cu58.1Zr35.9Al6 BMG are T-g =760 K and T-g/T-l =0.648, and those of Cu39.7Zr47.1Al13.2 BMG are T-g =731 K and Tg/T-l =0.638. (c) 2006 Elsevier B.V. All rights reserved. |
| description.department | dalian univ technol, state key lab mat modificat, dalian 116024, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. city univ hong kong, dept phys & mat sci, kowloon, hong kong, peoples r china.;dong, ca (reprint author), dalian univ technol, state key lab mat modificat, dalian 116024, peoples r china;dong@dlut.edu.cn |
| Keyword | Bulk Metallic Glasses Cluster Cu-zr-al Alloys Composition Design Mechanical-properties Thermal-stability Alloys Packing Systems |
| URL | 查看原文 |
| WOS ID | WOS:000245477800005 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/33868 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Q. Wang,C. Dong,J. B. Qiang,et al. Cluster line criterion and Cu-Zr-Al bulk metallic glass formation[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2007,449:18-23. |
| APA | Q. Wang,C. Dong,J. B. Qiang,&Y. M. Wang.(2007).Cluster line criterion and Cu-Zr-Al bulk metallic glass formation.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,449,18-23. |
| MLA | Q. Wang,et al."Cluster line criterion and Cu-Zr-Al bulk metallic glass formation".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 449(2007):18-23. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment