Formation and composition optimization of Cu-based bulk metallic glasses in Cu-Zr-Ti ternary system
文献类型：期刊论文
| 作者 | Q. Wang ; J. B. Qiang ; Y. M. Wang ; J. H. Xia ; Z. Lin ; X. F. Zhang ; C. Dong |
| 刊名 | Acta Physica Sinica
 |
| 出版日期 | 2006 |
| 卷号 | 55期号:1页码:378-385 |
| 关键词 | bulk metallic glasses Cu-Zr-Ti alloys atomic clusters electron concentration short-range order thermal-stability mechanical-properties amorphous-alloys forming ability calorimetric evidence supercooled liquid criterion phase ag |
| ISSN号 | 1000-3290 |
| 中文摘要 | The present paper investigates the formation and composition characteristics of Cu-based bulk metallic glasses (BMGs) in the inter-transition metal system Cu-Zr-Ti by using an "e/a-variant criterion" which is relevant to clusters. Three such composition lines, (Cu9/13Zr4/13)(100-x)Ti-x, (Cu0.618Zr0.382)(100-x)Ti-x and (Cu0.56Zr0.44)(100-x)Ti-x, are defined in the Cu-Zr-Ti system. Among them, Cu9Zr4, Cu61.8Zr38.2 and Cu56Zr44 are specific Cu-Zr binary cluster compositions. Alloy compositions are designed along these three composition lines, and alloy rods with diameter of 3mm are prepared by copper mould casting. X-ray and TEM analysis show that BMGs are formed within Ti content range of x = 7.5%-15%, x = 7.5%-12.5% and x = 5%-12% respectively along these three lines. Thermal analysis results further indicate that these BMGs have higher thermodynamic T-g, T-x, T-g/T-l and gamma values, and these values of BMGs on every composition line decrease with increasing Ti content. The optimum BMG composition in this system is Cu64Zr28.5Ti7.5 on the (Cu9/13Zr4/13)(100-x)Ti-x series, which also has the highest hardness and activation energy of crystallization. The characteristic parameters of this BMG are T-g = 736K, T-x = 769K, T-g/T-l = 0.627, gamma = 0.403, H-v = 6.74GPa and Delta E = 3.88 eV, which are all superior to those of the reported BMG Cu60Zr30 Ti-10. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34519]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Q. Wang,J. B. Qiang,Y. M. Wang,et al. Formation and composition optimization of Cu-based bulk metallic glasses in Cu-Zr-Ti ternary system[J]. Acta Physica Sinica,2006,55(1):378-385. |
| APA | Q. Wang.,J. B. Qiang.,Y. M. Wang.,J. H. Xia.,Z. Lin.,...&C. Dong.(2006).Formation and composition optimization of Cu-based bulk metallic glasses in Cu-Zr-Ti ternary system.Acta Physica Sinica,55(1),378-385. |
| MLA | Q. Wang,et al."Formation and composition optimization of Cu-based bulk metallic glasses in Cu-Zr-Ti ternary system".Acta Physica Sinica 55.1(2006):378-385. |
入库方式： OAI收割
来源：金属研究所
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