玻璃流动探索者分享 http://blog.sciencenet.cn/u/mqjiang 中国科学院力学研究所 非线性力学国家重点实验室 Associate Prof., Ph.D.

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Intrinsic correlation between fragility and bulk modulus in metallic glasses

已有 4375 次阅读 2008-4-22 12:31 |个人分类:学术研究|系统分类:科研笔记

Author(s): Jiang MQ (Jiang, Minqiang), Dai LH (Dai, Lanhong)
Source: PHYSICAL REVIEW B    Volume: 76    Issue: 5  Article Number: 054204    Published: AUG 2007  
Times Cited: 1     References: 72     
Abstract: A systematic study on the available data of 26 metallic glasses shows that there is an intrinsic correlation between fragility of a liquid and bulk modulus of its glass. The underlying physics can be rationalized within the formalism of potential energy landscape thermodynamics. It is surprising to find that the linear correlation between the fragility and the bulk-shear modulus ratio exists strictly at either absolute zero temperature or very high frequency. Further analyses indicate that a real flow event in bulk metallic glasses is shear dominant, and fragility is in inverse proportion to shear-induced bulk dilatation. Finally, extension of these findings to nonmetallic glasses is discussed.
Document Type: Article
Language: English
Addresses: Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China
Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China
State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
E-mail Addresses: mqjiang@lnm.imech.ac.cn
Publisher: AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Subject Category: Physics, Condensed Matter
IDS Number: 206AA
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.76.054204

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Two intrinsci correlations:







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