Shear yield and flow behavior of a zirconium-based bulk metallic glass

被引:15
作者
Yuan, Fuping [1 ]
Prakash, Vikas [1 ]
Lewandowski, John J. [2 ]
机构
[1] Case Western Reserve Univ, Dept Mech & Aerosp Engn, Cleveland, OH 44106 USA
[2] Case Western Reserve Univ, Dept Mat Sci & Engn, Cleveland, OH 44106 USA
基金
美国国家科学基金会;
关键词
Bulk metallic glass; Plate-impact compression-and-shear experiments; Normal stress; Hydrostatic pressure; Mohr-Coulomb model; HYDROSTATIC-PRESSURE; PLASTIC-DEFORMATION; FRACTURE MECHANISMS; AMORPHOUS METALS; INTERFEROMETER; IMPACT; COMPRESSION; FRICTION; TENSILE;
D O I
10.1016/j.mechmat.2009.11.003
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A series of plate-impact combined compression-and-shear experiments are conducted to investigate the effect of normal stress and hydrostatic pressure on the shear yield and flow behavior of a zirconium-based bulk metallic glass (BMG), Zr41.25Ti13.75Ni10Cu12.5Be22.5. The experiments involve skew impact of it thick tungsten carbide (WC) flyer with a stationary WC target plate that sandwiches a thin BMG specimen. The experimental results are combined with the results of a previous study by Lewandowski and Lowhaphandu (2002), where the yield and fracture behavior of the same composition BMG at hydrostatic pressures up to 1 GPa were analyzed using a simple Mohr-Coulomb type model, to understand the effects of normal stress and hydrostatic pressure on the yield and flow behavior of the BMG. The results indicate that, within experimental errors, the normal stress as well as the hydrostatic pressure up to 8.8 GPa have a negligible influence on the shear yield and flow behavior of the BMG. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:248 / 255
页数:8
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