Light Emission and Dynamic Failure Mechanism of Hypervelocity Impact on Zr-Ti-Ni-Cu-Be Bulk Metallic Glass

Hypervelocity impact on rectangular plate-shaped Zr- sub(1)1Ti sub(11) Cu sub(12.5)Ni sub(10)Be sub(22.5) bulk metallic glass (BMG) is performed by a two-stage light gas gun. The targets used in the experiment are BMG plates with a thickness of 5mm. The projectile, spherical aluminum (3.1mm in diame...

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Bibliographic Details
Published in:Chinese physics letters 2011-09, Vol.28 (9), p.096102-1-096102-4
Main Authors: Sun, Bao-Ru (宝茹 孙), Zhan, Zai-Ji (再吉 战), Liang, Bo (波梁), Zhang, Rui-Jun (瑞军 张), Wang, Wen-Kui (文魁 王)
Format: Article
Language:English
Subjects:
Amorphous materials
Craters
Hypervelocity impact
Light emission
Metallic glasses
Tires
Zirconium
Zirconium base alloys
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Summary:Hypervelocity impact on rectangular plate-shaped Zr- sub(1)1Ti sub(11) Cu sub(12.5)Ni sub(10)Be sub(22.5) bulk metallic glass (BMG) is performed by a two-stage light gas gun. The targets used in the experiment are BMG plates with a thickness of 5mm. The projectile, spherical aluminum (3.1mm in diameter), is accelerated up to valions velocities; the light is detected with a radiometer. The emission lasts from 200 us mu s to 1500 mu s and the intensity increases from 44 to 900 W/Sr- mu m). The duration and intensity of a light emission seem to depend on tire impact velocity and tire extent of target destruction through the formation of impact craters or penetration.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/28/9/096102