Glass formation and sluggish nucleation: Growth in ternary eutectic Co-Hf-B system
文献类型：期刊论文
| 作者 | W. S. Sun ; H. F. Zhang ; Z. Q. Hu ; T. Kulik |
| 刊名 | Journal of Non-Crystalline Solids
 |
| 出版日期 | 2005 |
| 卷号 | 351期号:19-20页码:1696-1700 |
| 关键词 | bulk amorphous-alloys metallic glasses transition temperature rapid solidification supercooled liquid undercooled melts forming ability crystal-growth fe crystallization |
| ISSN号 | 0022-3093 |
| 中文摘要 | Four rapidly quenched (RQ) ribbons of Co-Hf-B alloys with the ternary eutectic compositions were obtained by melt-spinning. The thermal stability and glass forming ability (GFA) were studied using high-temperature differential scanning calorimetry (DSC) measurements. Very high GFA was found for all the alloys studied, which are characterized by high values (above 0.64) of the reduced crystallization temperature (T-rx = T-x/T-m). The supercooled liquid region (Delta T-x = T-x - T-g = 45 K) was found for Co66Hf6.5B27.5 amorphous alloy with equilibrium microstructure composed of three intermetallic compounds (Co2B, Co21Hf2B6 and Co3HfB2). The high GFA was explained by the sluggish nucleation and slow growth of the complex structure intermetallic compounds in the ternary Co-Hf-B system. The Hf presence in the alloys studied plays an important role due to the slow diffusivity of relatively large atoms of this element. (c) 2005 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35049]  |
| 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 | W. S. Sun,H. F. Zhang,Z. Q. Hu,et al. Glass formation and sluggish nucleation: Growth in ternary eutectic Co-Hf-B system[J]. Journal of Non-Crystalline Solids,2005,351(19-20):1696-1700. |
| APA | W. S. Sun,H. F. Zhang,Z. Q. Hu,&T. Kulik.(2005).Glass formation and sluggish nucleation: Growth in ternary eutectic Co-Hf-B system.Journal of Non-Crystalline Solids,351(19-20),1696-1700. |
| MLA | W. S. Sun,et al."Glass formation and sluggish nucleation: Growth in ternary eutectic Co-Hf-B system".Journal of Non-Crystalline Solids 351.19-20(2005):1696-1700. |
入库方式： OAI收割
来源：金属研究所
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