Reshock Response of 2A12 Aluminum Alloy at High Pressures

doi:10.1088/0256-307X/26/9/096201

Chin. Phys. Lett.

2009, Vol. 26

Issue (9): 096201 DOI: 10.1088/0256-307X/26/9/096201

CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES

Reshock Response of 2A12 Aluminum Alloy at High Pressures

HOU Ri-Li^1,2,3, PENG Jian-Xiang¹, JING Fu-Qian¹, ZHANG Jian-Hua³, ZHOU Ping³

¹National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, PO Box 919-102, Mianyang 621900²School of Science, Wuhan University of Technology, Wuhan 430070³The First Aeronautic Institute of the Air Force, Xinyang 464000

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HOU Ri-Li, PENG Jian-Xiang, JING Fu-Qian et al 2009 Chin. Phys. Lett. 26 096201

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Abstract By means of mounting the specimen on a low-impedance buffer, reshock experiments were carried out on a 2A12 aluminum alloy up to shock stresses of 67.6GPa. Reshock wave profiles from the initial shock stresses of 60.9-67.6GPa were measured with a velocity interferometer, and it shows that the 2A12 aluminum alloy characterizes as quasi-elastic response during recompression process. The Lagrange longitudinal velocities along the reloading path from initial shock state were obtained from two shots of experiments, while the bulk velocities at corresponding shock stresses were determined via extrapolating from the public reported unloading plastic sound velocities. Combining the reshock and the release experimental results, the yield strength of 2A12 aluminum alloy at shock stress of 60.9GPa was estimated to be about 1.7GPa.

Keywords: 62.50.+p 62.20.Fe 62.20.Dc 46.35.+z

Received: 02 February 2009 Published: 28 August 2009

PACS:	62.50.+p
	62.20.Fe
	62.20.Dc
	46.35.+z	(Viscoelasticity, plasticity, viscoplasticity)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/9/096201 OR https://cpl.iphy.ac.cn/Y2009/V26/I9/096201

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	HOU Ri-Li
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	ZHOU Ping

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