Two-step relaxations in metallic glasses during isothermal annealing
文献类型：期刊论文
| 作者 | Wang, Xinmin; Song, Lijian; Xu, Wei; Huo, Juntao; Wang, Jim-Qiang; Li, Runwei |
| 刊名 | INTERMETALLICS
 |
| 出版日期 | 2018 |
| 卷号 | 93页码:101-105 |
| 关键词 | Johari-goldstein Relaxation Secondary Relaxation Beta-relaxation Free-volume Structural Relaxation Supercooled Liquids Kinetic Stability Elastic Models Transition Temperature |
| 英文摘要 | Isothermal annealing is a very useful strategy in modulating the properties and structures of metallic glasses, which has been regarded as a single relaxation progress. In this work, the enthalpy relaxation of Au-based metallic glasses are studied using a high-precision calorimetry. An intriguing transition from beta relaxation to alpha relaxation was confirmed during isothermal annealing. Energy landscape model is proposed to quantitatively explain how the relaxation modes transform. It is found that a small enthalpy decrease (about 0.8 kJ/mol) in initial state causes an extremely large increase (about 100 kJ/mol) in relaxation barrier, which is attributed to the enhanced cooperative atomic motion. These results open a gate for precisely understanding the role of different relaxation modes in modifying the properties of metallic glasses. |
| 学科主题 | Biophysics ; Chemistry ; Materials Science |
| 语种 | 英语 |
| 公开日期 | 2018-12-04 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/16833]  |
| 专题 | 2018专题 |
| 推荐引用方式 GB/T 7714 | Wang, Xinmin,Song, Lijian,Xu, Wei,et al. Two-step relaxations in metallic glasses during isothermal annealing[J]. INTERMETALLICS,2018,93:101-105. |
| APA | Wang, Xinmin,Song, Lijian,Xu, Wei,Huo, Juntao,Wang, Jim-Qiang,&Li, Runwei.(2018).Two-step relaxations in metallic glasses during isothermal annealing.INTERMETALLICS,93,101-105. |
| MLA | Wang, Xinmin,et al."Two-step relaxations in metallic glasses during isothermal annealing".INTERMETALLICS 93(2018):101-105. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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