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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On Mechanical Properties of Metallic Glass and its Liquid Vitrification

已有 3623 次阅读 2008-4-22 12:37 |个人分类:学术研究

M. Q. Jiang1,a and L. H. Dai1,2,b*
1State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Science, Beijing 100080, PR China
2State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, PR China
mqjiang@lnm.imech.ac.cn, lhdai@lnm.imech.ac.cn


Keywords: metallic glass, elastic modulus, glass transition, mechanical property


Abstract. A systematic survey of the available data such as elastic constants, density, molar mass, and glass transition temperature of 45 metallic glasses is conducted. It is found that a critical strain controlling the onset of plastic deformation is material-independent. However, the correlation between elastic constants of solid glass and vitrification characteristics of its liquid does not follow a simple linear relation, and a characteristic volume, viz. molar volume, maybe relating to the characteristic size of a shear transformation zone (STZ), should be involved.

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