Mechanical relaxation in supercooled liquids of bulk metallic glasses
文献类型：期刊论文
| 作者 | Wen, P ; Zhao, ZF ; Pan, MX ; Wang, WH |
| 刊名 | PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
 |
| 出版日期 | 2010 |
| 卷号 | 207期号:12页码:2693 |
| 关键词 | TIME-TEMPERATURE SUPERPOSITION MODE-COUPLING THEORY NI AMORPHOUS-ALLOYS VISCOUS-LIQUIDS FORMING LIQUIDS MOLECULAR LIQUIDS CASTING METHOD TRANSITION VISCOSITY HETEROGENEITY |
| ISSN号 | 1862-6300 |
| 通讯作者 | Wen, P: Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We report the mechanical relaxation behaviors in typical supercooled liquids of bulk metallic glasses (BMGs). The metallic supercooled liquids are ideal systems for studying intrinsic motions of glass-former supercooled liquids because their structure is close to the simple "dense random packing of spheres'' model. We show that the primary relaxation in the frequency domain is dissipative and can be described by the empirical Kohlrausch-Williams-Watts function, and the temperature dependence of the primary relaxation time has the Vogel-Fulcher-Tamman form. Beyond the primary relaxation, an excess wing is found on the high-frequency tail of the primary relaxation. A corresponding shoulder is exhibited at a given frequency in the temperature region below the glass-transition temperature. The experimental results confirm that the decoupling between the slow beta relaxation and the primary (a) relaxation exists in metallic supercooled liquids. Based on the current models of the glass transition, we demonstrate that the dynamically heterogeneity originates in the heterogeneous microstructure of metallic supercooled liquids, and a picture of the heterogeneous microstructure is provided. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
| 收录类别 | SCI |
| 资助信息 | Natural Science foundation of China [50671118, 50921091] |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/41865]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wen, P,Zhao, ZF,Pan, MX,et al. Mechanical relaxation in supercooled liquids of bulk metallic glasses[J]. PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE,2010,207(12):2693. |
| APA | Wen, P,Zhao, ZF,Pan, MX,&Wang, WH.(2010).Mechanical relaxation in supercooled liquids of bulk metallic glasses.PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE,207(12),2693. |
| MLA | Wen, P,et al."Mechanical relaxation in supercooled liquids of bulk metallic glasses".PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE 207.12(2010):2693. |
入库方式： OAI收割
来源：物理研究所
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