Deformation behaviors of a TiZrNiCuBe bulk metallic glass under shock loading

In the present work, the shock responses of Ti 40Zr 25Ni 3Cu 12Be 20 bulk metallic glass (BMG) were investigated by using a planar impact technique on an electrical explosion of conductor (EEC) installation. The spallation occurs even if the stress behind the shock front is less than the Hogoniot el...

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Veröffentlicht in:Journal of alloys and compounds 2010-09, Vol.505 (2), p.501-504
Hauptverfasser: Atroshenko, Svetlana A., Morozov, N.F., Zheng, W., Huang, Y.J., Sudenkov, Yuri V., Naumova, N.S., Shen, J.
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container_end_page 504
container_issue 2
container_start_page 501
container_title Journal of alloys and compounds
container_volume 505
creator Atroshenko, Svetlana A.
Morozov, N.F.
Zheng, W.
Huang, Y.J.
Sudenkov, Yuri V.
Naumova, N.S.
Shen, J.
description In the present work, the shock responses of Ti 40Zr 25Ni 3Cu 12Be 20 bulk metallic glass (BMG) were investigated by using a planar impact technique on an electrical explosion of conductor (EEC) installation. The spallation occurs even if the stress behind the shock front is less than the Hogoniot elastic limit (HEL) stress of the Ti-based BMG. When the velocity of aluminum flyer with thickness of 1.7 mm is 570 m/s, the spall strength of the alloy sample is 2.9 GPa while the stress, strain and particle velocity behind the shock front are 4.3 GPa, 2.8% and 150 m/s, respectively. The calculated yield strength for the alloy upon the dynamic loading is much larger than that under the quasistatic compressive loading. The scanning electron microscope (SEM) observation indicates that, after dynamic loading, the free surface of the sample forms a lot of shear bands and cracks. Optical microscope (OM) shows that cracks and microvoids, which cause the occurrence of the spallation of the sample, are distributed on the cross-section of the recovered Ti-based BMG sample.
doi_str_mv 10.1016/j.jallcom.2010.06.143
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subjects Alloys
Amorphous materials
Bulk metallic glass
Cracks
Loads (forces)
Planar impact
Scanning electron microscopy
Shock fronts
Spall strength
Spallation
Stresses
Titanium
title Deformation behaviors of a TiZrNiCuBe bulk metallic glass under shock loading
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